diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index dcc6d2e..8974b2a 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -40,6 +40,12 @@ jobs:
         if: steps.npm-cache.outputs.cache-hit != 'true'
         run: npm ci --cache .npm
 
+      - name: Check types
+        run: npm run check:types
+
+      - name: Lint check
+        run: npm run lint:check
+
       - name: Install fdp-play
         run: npm install -g @fairdatasociety/fdp-play
 
diff --git a/package-lock.json b/package-lock.json
index 39e2001..4fcc8ec 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,7 +10,7 @@
       "dependencies": {
         "@emotion/react": "^11.10.4",
         "@emotion/styled": "^11.10.4",
-        "@fairdatasociety/fdp-contracts-js": "^3.6.1",
+        "@fairdatasociety/fdp-contracts-js": "^3.8.0",
         "@fairdatasociety/fdp-storage": "^0.10.0",
         "@mui/icons-material": "^5.10.6",
         "@mui/material": "^5.10.7",
@@ -23,7 +23,6 @@
         "@types/react-dom": "^18.0.6",
         "@web3modal/ethereum": "^2.0.0-beta.5",
         "@web3modal/react": "^2.0.0-beta.5",
-        "alchemy-sdk": "^2.6.0",
         "axios": "^0.27.2",
         "ethers": "^5.7.2",
         "react": "^18.2.0",
@@ -3367,9 +3366,9 @@
       }
     },
     "node_modules/@fairdatasociety/fdp-contracts-js": {
-      "version": "3.7.1",
-      "resolved": "https://registry.npmjs.org/@fairdatasociety/fdp-contracts-js/-/fdp-contracts-js-3.7.1.tgz",
-      "integrity": "sha512-G1TMIAJPIsfxEvubZh2qiiQb4XJx07jdmwUIvBNR2+PCdN2KnCNYQo1b4xkSFxk8BzY7hnXtricmIlNUmv3N0w==",
+      "version": "3.8.0",
+      "resolved": "https://registry.npmjs.org/@fairdatasociety/fdp-contracts-js/-/fdp-contracts-js-3.8.0.tgz",
+      "integrity": "sha512-Lfr/kxCBZ4IYWwAkeRa2fSi9suYd5DxTG5xunfuwMm32FeB99fL7tI19sb5tjPyRj6bphJPaRWmFCdPJ+yfZsg==",
       "peerDependencies": {
         "ethers": ">=5.6.4"
       }
@@ -9084,35 +9083,6 @@
         "ajv": "^6.9.1"
       }
     },
-    "node_modules/alchemy-sdk": {
-      "version": "2.6.0",
-      "resolved": "https://registry.npmjs.org/alchemy-sdk/-/alchemy-sdk-2.6.0.tgz",
-      "integrity": "sha512-5Oe0WCPPsPtIWMVPTlpLcamMHSBQyxpmAX/np+BmNMU0w5V8U+r8MweeqSuWDFPQ8sQiq+bG7xP/NwbBvif9vw==",
-      "dependencies": {
-        "@ethersproject/abi": "^5.7.0",
-        "@ethersproject/abstract-provider": "^5.7.0",
-        "@ethersproject/bignumber": "^5.7.0",
-        "@ethersproject/bytes": "^5.7.0",
-        "@ethersproject/contracts": "^5.7.0",
-        "@ethersproject/hash": "^5.7.0",
-        "@ethersproject/networks": "^5.7.0",
-        "@ethersproject/providers": "^5.7.0",
-        "@ethersproject/units": "^5.7.0",
-        "@ethersproject/wallet": "^5.7.0",
-        "@ethersproject/web": "^5.7.0",
-        "axios": "^0.26.1",
-        "sturdy-websocket": "^0.2.1",
-        "websocket": "^1.0.34"
-      }
-    },
-    "node_modules/alchemy-sdk/node_modules/axios": {
-      "version": "0.26.1",
-      "resolved": "https://registry.npmjs.org/axios/-/axios-0.26.1.tgz",
-      "integrity": "sha512-fPwcX4EvnSHuInCMItEhAGnaSEXRBjtzh9fOtsE6E1G6p7vl7edEeZe11QHf18+6+9gR5PbKV/sGKNaD8YaMeA==",
-      "dependencies": {
-        "follow-redirects": "^1.14.8"
-      }
-    },
     "node_modules/anser": {
       "version": "1.4.10",
       "resolved": "https://registry.npmjs.org/anser/-/anser-1.4.10.tgz",
@@ -10314,6 +10284,7 @@
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       "integrity": "sha512-kukuqc39WOHtdxtw4UScxF/WVnMFVSQVKhtx3AjZJzhd0RGZZldcrfSEbVsWWe6KNH253574cq5F+wpv0G9pJw==",
       "hasInstallScript": true,
+      "optional": true,
       "dependencies": {
         "node-gyp-build": "^4.3.0"
       },
@@ -11644,15 +11615,6 @@
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     },
-    "node_modules/d": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/d/-/d-1.0.1.tgz",
-      "integrity": "sha512-m62ShEObQ39CfralilEQRjH6oAMtNCV1xJyEx5LpRYUVN+EviphDgUc/F3hnYbADmkiNs67Y+3ylmlG7Lnu+FA==",
-      "dependencies": {
-        "es5-ext": "^0.10.50",
-        "type": "^1.0.1"
-      }
-    },
     "node_modules/damerau-levenshtein": {
       "version": "1.0.8",
       "resolved": "https://registry.npmjs.org/damerau-levenshtein/-/damerau-levenshtein-1.0.8.tgz",
@@ -12418,30 +12380,6 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
-    "node_modules/es5-ext": {
-      "version": "0.10.62",
-      "resolved": "https://registry.npmjs.org/es5-ext/-/es5-ext-0.10.62.tgz",
-      "integrity": "sha512-BHLqn0klhEpnOKSrzn/Xsz2UIW8j+cGmo9JLzr8BiUapV8hPL9+FliFqjwr9ngW7jWdnxv6eO+/LqyhJVqgrjA==",
-      "hasInstallScript": true,
-      "dependencies": {
-        "es6-iterator": "^2.0.3",
-        "es6-symbol": "^3.1.3",
-        "next-tick": "^1.1.0"
-      },
-      "engines": {
-        "node": ">=0.10"
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-    "node_modules/es6-iterator": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/es6-iterator/-/es6-iterator-2.0.3.tgz",
-      "integrity": "sha512-zw4SRzoUkd+cl+ZoE15A9o1oQd920Bb0iOJMQkQhl3jNc03YqVjAhG7scf9C5KWRU/R13Orf588uCC6525o02g==",
-      "dependencies": {
-        "d": "1",
-        "es5-ext": "^0.10.35",
-        "es6-symbol": "^3.1.1"
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     "node_modules/es6-promise": {
       "version": "4.2.8",
       "resolved": "https://registry.npmjs.org/es6-promise/-/es6-promise-4.2.8.tgz",
@@ -12455,15 +12393,6 @@
         "es6-promise": "^4.0.3"
       }
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-    "node_modules/es6-symbol": {
-      "version": "3.1.3",
-      "resolved": "https://registry.npmjs.org/es6-symbol/-/es6-symbol-3.1.3.tgz",
-      "integrity": "sha512-NJ6Yn3FuDinBaBRWl/q5X/s4koRHBrgKAu+yGI6JCBeiu3qrcbJhwT2GeR/EXVfylRk8dpQVJoLEFhK+Mu31NA==",
-      "dependencies": {
-        "d": "^1.0.1",
-        "ext": "^1.1.2"
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     "node_modules/escalade": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/escalade/-/escalade-3.1.1.tgz",
@@ -13951,19 +13880,6 @@
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-      "version": "1.7.0",
-      "resolved": "https://registry.npmjs.org/ext/-/ext-1.7.0.tgz",
-      "integrity": "sha512-6hxeJYaL110a9b5TEJSj0gojyHQAmA2ch5Os+ySCiA1QGdS697XWY1pzsrSjqA9LDEEgdB/KypIlR59RcLuHYw==",
-      "dependencies": {
-        "type": "^2.7.2"
-      }
-    },
-    "node_modules/ext/node_modules/type": {
-      "version": "2.7.2",
-      "resolved": "https://registry.npmjs.org/type/-/type-2.7.2.tgz",
-      "integrity": "sha512-dzlvlNlt6AXU7EBSfpAscydQ7gXB+pPGsPnfJnZpiNJBDj7IaJzQlBZYGdEi4R9HmPdBv2XmWJ6YUtoTa7lmCw=="
-    },
     "node_modules/extend-shallow": {
       "version": "3.0.2",
       "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-3.0.2.tgz",
@@ -21490,11 +21406,6 @@
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       "integrity": "sha512-Yd3UES5mWCSqR+qNT93S3UoYUkqAZ9lLg8a7g9rimsWmYGK8cVToA4/sF3RrshdyV3sAGMXVUmpMYOw+dLpOuw=="
     },
-    "node_modules/next-tick": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/next-tick/-/next-tick-1.1.0.tgz",
-      "integrity": "sha512-CXdUiJembsNjuToQvxayPZF9Vqht7hewsvy2sOWafLvi2awflj9mOC6bHIg50orX8IJvWKY9wYQ/zB2kogPslQ=="
-    },
     "node_modules/nice-try": {
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       "resolved": "https://registry.npmjs.org/nice-try/-/nice-try-1.0.5.tgz",
@@ -27580,11 +27491,6 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
-    "node_modules/sturdy-websocket": {
-      "version": "0.2.1",
-      "resolved": "https://registry.npmjs.org/sturdy-websocket/-/sturdy-websocket-0.2.1.tgz",
-      "integrity": "sha512-NnzSOEKyv4I83qbuKw9ROtJrrT6Z/Xt7I0HiP/e6H6GnpeTDvzwGIGeJ8slai+VwODSHQDooW2CAilJwT9SpRg=="
-    },
     "node_modules/style-loader": {
       "version": "3.3.1",
       "resolved": "https://registry.npmjs.org/style-loader/-/style-loader-3.3.1.tgz",
@@ -28395,11 +28301,6 @@
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       "integrity": "sha512-6rt+RN7aOi1nGMyC4Xa5DdYiukl2UWCbcJft7YhxReBGQD7OAM8Pbxw6YMo4r2diNEA8FEmu32YOn9rhaiE5yw=="
     },
-    "node_modules/type": {
-      "version": "1.2.0",
-      "resolved": "https://registry.npmjs.org/type/-/type-1.2.0.tgz",
-      "integrity": "sha512-+5nt5AAniqsCnu2cEQQdpzCAh33kVx8n0VoFidKpB1dVVLAN/F+bgVOqOJqOnEnrhp222clB5p3vUlD+1QAnfg=="
-    },
     "node_modules/type-check": {
       "version": "0.4.0",
       "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.4.0.tgz",
@@ -28768,6 +28669,7 @@
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       "hasInstallScript": true,
+      "optional": true,
       "dependencies": {
         "node-gyp-build": "^4.3.0"
       },
@@ -29297,22 +29199,6 @@
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-    "node_modules/websocket": {
-      "version": "1.0.34",
-      "resolved": "https://registry.npmjs.org/websocket/-/websocket-1.0.34.tgz",
-      "integrity": "sha512-PRDso2sGwF6kM75QykIesBijKSVceR6jL2G8NGYyq2XrItNC2P5/qL5XeR056GhA+Ly7JMFvJb9I312mJfmqnQ==",
-      "dependencies": {
-        "bufferutil": "^4.0.1",
-        "debug": "^2.2.0",
-        "es5-ext": "^0.10.50",
-        "typedarray-to-buffer": "^3.1.5",
-        "utf-8-validate": "^5.0.2",
-        "yaeti": "^0.0.6"
-      },
-      "engines": {
-        "node": ">=4.0.0"
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@@ -29334,19 +29220,6 @@
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-      "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
-      "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
-      "dependencies": {
-        "ms": "2.0.0"
-      }
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-    "node_modules/websocket/node_modules/ms": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
-      "integrity": "sha512-Tpp60P6IUJDTuOq/5Z8cdskzJujfwqfOTkrwIwj7IRISpnkJnT6SyJ4PCPnGMoFjC9ddhal5KVIYtAt97ix05A=="
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@@ -29909,14 +29782,6 @@
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@@ -32147,9 +32012,9 @@
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-      "resolved": "https://registry.npmjs.org/@fairdatasociety/fdp-contracts-js/-/fdp-contracts-js-3.7.1.tgz",
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+      "version": "3.8.0",
+      "resolved": "https://registry.npmjs.org/@fairdatasociety/fdp-contracts-js/-/fdp-contracts-js-3.8.0.tgz",
+      "integrity": "sha512-Lfr/kxCBZ4IYWwAkeRa2fSi9suYd5DxTG5xunfuwMm32FeB99fL7tI19sb5tjPyRj6bphJPaRWmFCdPJ+yfZsg==",
       "requires": {}
     },
     "@fairdatasociety/fdp-storage": {
@@ -36489,37 +36354,6 @@
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-        "@ethersproject/bytes": "^5.7.0",
-        "@ethersproject/contracts": "^5.7.0",
-        "@ethersproject/hash": "^5.7.0",
-        "@ethersproject/networks": "^5.7.0",
-        "@ethersproject/providers": "^5.7.0",
-        "@ethersproject/units": "^5.7.0",
-        "@ethersproject/wallet": "^5.7.0",
-        "@ethersproject/web": "^5.7.0",
-        "axios": "^0.26.1",
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@@ -37446,6 +37280,7 @@
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@@ -38431,15 +38266,6 @@
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-          "resolved": "https://registry.npmjs.org/type/-/type-2.7.2.tgz",
-          "integrity": "sha512-dzlvlNlt6AXU7EBSfpAscydQ7gXB+pPGsPnfJnZpiNJBDj7IaJzQlBZYGdEi4R9HmPdBv2XmWJ6YUtoTa7lmCw=="
-        }
-      }
-    },
     "extend-shallow": {
       "version": "3.0.2",
       "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-3.0.2.tgz",
@@ -45957,11 +45739,6 @@
       "resolved": "https://registry.npmjs.org/neo-async/-/neo-async-2.6.2.tgz",
       "integrity": "sha512-Yd3UES5mWCSqR+qNT93S3UoYUkqAZ9lLg8a7g9rimsWmYGK8cVToA4/sF3RrshdyV3sAGMXVUmpMYOw+dLpOuw=="
     },
-    "next-tick": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/next-tick/-/next-tick-1.1.0.tgz",
-      "integrity": "sha512-CXdUiJembsNjuToQvxayPZF9Vqht7hewsvy2sOWafLvi2awflj9mOC6bHIg50orX8IJvWKY9wYQ/zB2kogPslQ=="
-    },
     "nice-try": {
       "version": "1.0.5",
       "resolved": "https://registry.npmjs.org/nice-try/-/nice-try-1.0.5.tgz",
@@ -50310,11 +50087,6 @@
       "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-3.1.1.tgz",
       "integrity": "sha512-6fPc+R4ihwqP6N/aIv2f1gMH8lOVtWQHoqC4yK6oSDVVocumAsfCqjkXnqiYMhmMwS/mEHLp7Vehlt3ql6lEig=="
     },
-    "sturdy-websocket": {
-      "version": "0.2.1",
-      "resolved": "https://registry.npmjs.org/sturdy-websocket/-/sturdy-websocket-0.2.1.tgz",
-      "integrity": "sha512-NnzSOEKyv4I83qbuKw9ROtJrrT6Z/Xt7I0HiP/e6H6GnpeTDvzwGIGeJ8slai+VwODSHQDooW2CAilJwT9SpRg=="
-    },
     "style-loader": {
       "version": "3.3.1",
       "resolved": "https://registry.npmjs.org/style-loader/-/style-loader-3.3.1.tgz",
@@ -50922,11 +50694,6 @@
       "resolved": "https://registry.npmjs.org/tweetnacl/-/tweetnacl-1.0.3.tgz",
       "integrity": "sha512-6rt+RN7aOi1nGMyC4Xa5DdYiukl2UWCbcJft7YhxReBGQD7OAM8Pbxw6YMo4r2diNEA8FEmu32YOn9rhaiE5yw=="
     },
-    "type": {
-      "version": "1.2.0",
-      "resolved": "https://registry.npmjs.org/type/-/type-1.2.0.tgz",
-      "integrity": "sha512-+5nt5AAniqsCnu2cEQQdpzCAh33kVx8n0VoFidKpB1dVVLAN/F+bgVOqOJqOnEnrhp222clB5p3vUlD+1QAnfg=="
-    },
     "type-check": {
       "version": "0.4.0",
       "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.4.0.tgz",
@@ -51190,6 +50957,7 @@
       "version": "5.0.10",
       "resolved": "https://registry.npmjs.org/utf-8-validate/-/utf-8-validate-5.0.10.tgz",
       "integrity": "sha512-Z6czzLq4u8fPOyx7TU6X3dvUZVvoJmxSQ+IcrlmagKhilxlhZgxPK6C5Jqbkw1IDUmFTM+cz9QDnnLTwDz/2gQ==",
+      "optional": true,
       "requires": {
         "node-gyp-build": "^4.3.0"
       }
@@ -51562,34 +51330,6 @@
       "resolved": "https://registry.npmjs.org/webpack-sources/-/webpack-sources-3.2.3.tgz",
       "integrity": "sha512-/DyMEOrDgLKKIG0fmvtz+4dUX/3Ghozwgm6iPp8KRhvn+eQf9+Q7GWxVNMk3+uCPWfdXYC4ExGBckIXdFEfH1w=="
     },
-    "websocket": {
-      "version": "1.0.34",
-      "resolved": "https://registry.npmjs.org/websocket/-/websocket-1.0.34.tgz",
-      "integrity": "sha512-PRDso2sGwF6kM75QykIesBijKSVceR6jL2G8NGYyq2XrItNC2P5/qL5XeR056GhA+Ly7JMFvJb9I312mJfmqnQ==",
-      "requires": {
-        "bufferutil": "^4.0.1",
-        "debug": "^2.2.0",
-        "es5-ext": "^0.10.50",
-        "typedarray-to-buffer": "^3.1.5",
-        "utf-8-validate": "^5.0.2",
-        "yaeti": "^0.0.6"
-      },
-      "dependencies": {
-        "debug": {
-          "version": "2.6.9",
-          "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
-          "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
-          "requires": {
-            "ms": "2.0.0"
-          }
-        },
-        "ms": {
-          "version": "2.0.0",
-          "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
-          "integrity": "sha512-Tpp60P6IUJDTuOq/5Z8cdskzJujfwqfOTkrwIwj7IRISpnkJnT6SyJ4PCPnGMoFjC9ddhal5KVIYtAt97ix05A=="
-        }
-      }
-    },
     "websocket-driver": {
       "version": "0.7.4",
       "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.4.tgz",
@@ -52067,11 +51807,6 @@
       "resolved": "https://registry.npmjs.org/y18n/-/y18n-5.0.8.tgz",
       "integrity": "sha512-0pfFzegeDWJHJIAmTLRP2DwHjdF5s7jo9tuztdQxAhINCdvS+3nGINqPd00AphqJR/0LhANUS6/+7SCb98YOfA=="
     },
-    "yaeti": {
-      "version": "0.0.6",
-      "resolved": "https://registry.npmjs.org/yaeti/-/yaeti-0.0.6.tgz",
-      "integrity": "sha512-MvQa//+KcZCUkBTIC9blM+CU9J2GzuTytsOUwf2lidtvkx/6gnEp1QvJv34t9vdjhFmha/mUiNDbN0D0mJWdug=="
-    },
     "yallist": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
diff --git a/package.json b/package.json
index 628082e..13c458d 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
   "dependencies": {
     "@emotion/react": "^11.10.4",
     "@emotion/styled": "^11.10.4",
-    "@fairdatasociety/fdp-contracts-js": "^3.6.1",
+    "@fairdatasociety/fdp-contracts-js": "^3.8.0",
     "@fairdatasociety/fdp-storage": "^0.10.0",
     "@mui/icons-material": "^5.10.6",
     "@mui/material": "^5.10.7",
@@ -18,7 +18,6 @@
     "@types/react-dom": "^18.0.6",
     "@web3modal/ethereum": "^2.0.0-beta.5",
     "@web3modal/react": "^2.0.0-beta.5",
-    "alchemy-sdk": "^2.6.0",
     "axios": "^0.27.2",
     "ethers": "^5.7.2",
     "react": "^18.2.0",
@@ -34,6 +33,8 @@
   "scripts": {
     "start": "react-scripts start",
     "start:batch": "REACT_APP_BATCH_ID=$npm_config_batch react-scripts start",
+    "check:types": "tsc --project tsconfig.json",
+    "lint:check": "eslint \"src/**/*.ts\" \"test/**/*.ts\"",
     "lint": "eslint .",
     "build": "react-scripts build",
     "test": "react-scripts test",
diff --git a/src/context/account.context.tsx b/src/context/account.context.tsx
index 94a2202..3f3b333 100644
--- a/src/context/account.context.tsx
+++ b/src/context/account.context.tsx
@@ -1,33 +1,11 @@
 import React, { useMemo, useState } from "react";
 import { createContext, useContext } from "react";
-import { BigNumber, providers, utils, Wallet } from "ethers";
+import { BigNumber, providers, Wallet } from "ethers";
 import { ENS } from "@fairdatasociety/fdp-contracts-js";
-import {
-  Alchemy,
-  Network as AlchemyNetwork,
-  AlchemySettings,
-} from "alchemy-sdk";
 import { RegisterResponse } from "../model/internal-messages.model";
 import { Account } from "../model/general.types";
 import { useNetworks } from "./network.context";
 import { FDS_DOMAIN } from "../constants/constants";
-import { Network } from "../model/network.model";
-
-function getAlchemySettings(network: Network): AlchemySettings | null {
-  switch (network.label) {
-    case "Görli":
-      return {
-        apiKey: process.env.REACT_APP_ALCHEMY_API_KEY,
-        network: AlchemyNetwork.ETH_GOERLI,
-      };
-    case "Sepolia":
-      return {
-        url: `https://eth-sepolia.g.alchemy.com/v2/${process.env.REACT_APP_ALCHEMY_API_KEY}`,
-      };
-    default:
-      return null;
-  }
-}
 
 export interface IAccountContext {
   inviteKey: string | null;
@@ -38,12 +16,7 @@ export interface IAccountContext {
     account: Account,
     minBalance: BigNumber
   ) => Promise<boolean>;
-  estimateGas: (
-    username: string,
-    account: string,
-    publicKey: string,
-    defaultMinBalance: BigNumber
-  ) => Promise<BigNumber>;
+  estimateGas: (defaultMinBalance: BigNumber) => Promise<BigNumber>;
 }
 
 const AccountContext = createContext<IAccountContext>({
@@ -71,22 +44,10 @@ export const AccountProvider = ({ children }: AccountContextProps) => {
   );
 
   const ens = useMemo(
-    () =>
-      new ENS(
-        currentNetwork.label === "Sepolia"
-          ? { ...currentNetwork.config, rpcUrl: "http://rpc.sepolia.org" }
-          : currentNetwork.config,
-        provider,
-        FDS_DOMAIN
-      ),
+    () => new ENS(currentNetwork.config, provider, FDS_DOMAIN),
     [currentNetwork, provider]
   );
 
-  const alchemy = useMemo(() => {
-    const alchemySettings = getAlchemySettings(currentNetwork);
-    return alchemySettings ? new Alchemy(alchemySettings) : null;
-  }, [currentNetwork]);
-
   const generateWallet = async (): Promise<RegisterResponse> => {
     try {
       const wallet = Wallet.createRandom();
@@ -116,29 +77,13 @@ export const AccountProvider = ({ children }: AccountContextProps) => {
     return balance.gte(minBalance);
   };
 
-  const estimateGas = async (
-    username: string,
-    account: string,
-    publicKey: string,
-    defaultMinBalance: BigNumber
-  ): Promise<BigNumber> => {
+  const estimateGas = (defaultMinBalance: BigNumber): Promise<BigNumber> => {
     try {
-      const [amount, price] = await Promise.all([
-        ens.registerUsernameEstimateGas(username, account, publicKey),
-        alchemy
-          ? alchemy.core.getGasPrice()
-          : Promise.resolve(BigNumber.from(100000000000)),
-      ]);
-
-      const gasPriceInEth = Number(
-        utils.formatEther(price.mul(BigNumber.from(amount)))
-      );
-
-      return utils.parseEther(String(Math.ceil(gasPriceInEth * 1000) / 1000));
+      return ens.registerUsernameApproximatePrice()
     } catch (error) {
       console.error(error);
 
-      return defaultMinBalance;
+      return Promise.resolve(defaultMinBalance);
     }
   };
 
diff --git a/src/model/network.model.ts b/src/model/network.model.ts
index cca93dd..da167fe 100644
--- a/src/model/network.model.ts
+++ b/src/model/network.model.ts
@@ -10,6 +10,7 @@ export interface Network {
       fdsRegistrar: string;
       publicResolver: string;
     };
+    gasEstimation: number;
     performChecks: boolean;
   };
 }
diff --git a/src/pages/register/register.tsx b/src/pages/register/register.tsx
index ac8092d..d0c8016 100644
--- a/src/pages/register/register.tsx
+++ b/src/pages/register/register.tsx
@@ -23,6 +23,7 @@ import { sendFunds } from "../../utils/account.utils";
 import axios from "axios";
 import { RegistrationRequest } from "@fairdatasociety/fdp-storage/dist/account/types";
 import { useLocales } from "../../context/locales.context";
+import { MULTIPLY_ETH_RESULT_FACTOR, roundWeiToEther } from '../../utils/eth.utils'
 
 enum Steps {
   UsernamePassword,
@@ -74,18 +75,9 @@ const Register = () => {
   const { intl } = useLocales();
 
   const getMinBalance = async () => {
-    const wallet = fdpClient.account.wallet;
-    const account = wallet?.address as string;
-    const publicKey = fdpClient.account.publicKey as string;
-
-    const price = await estimateGas(
-      data.username,
-      account,
-      publicKey,
-      minBalance
-    );
-
-    setMinBalance(price.mul(BigNumber.from(2)));
+    const price = await estimateGas(minBalance);
+
+    setMinBalance(price.mul(BigNumber.from(MULTIPLY_ETH_RESULT_FACTOR)));
   };
 
   const onUsernamePasswordSubmit = (registerData: RegisterData) => {
@@ -233,15 +225,19 @@ const Register = () => {
 
       fdpClient.account.setAccountFromMnemonic(mnemonic);
 
-      setLoadingMessage("CHECKING_BALANCE");
+      // if registration request is not set, check if user has enough balance
+      // otherwise it means that user continued registration process
+      if (!registrationRequest) {
+        setLoadingMessage("CHECKING_BALANCE");
 
-      const canProceed = await checkMinBalance(
-        fdpClient.account.wallet?.address as string,
-        minBalance
-      );
+        const canProceed = await checkMinBalance(
+            fdpClient.account.wallet?.address as string,
+            minBalance
+        );
 
-      if (!canProceed) {
-        throw new Error("Insufficient funds");
+        if (!canProceed) {
+          throw new Error("Insufficient funds");
+        }
       }
 
       setLoadingMessage("REGISTERING_NEW_ACCOUNT");
@@ -321,7 +317,7 @@ const Register = () => {
         intl.get(message) +
         " " +
         intl.get("WAITING_FOR_PAYMENT_AMOUNT", {
-          price: utils.formatEther(minBalance),
+          price: roundWeiToEther(minBalance),
         })
       );
     } else if (step === Steps.Complete) {
diff --git a/src/utils/eth.utils.ts b/src/utils/eth.utils.ts
new file mode 100644
index 0000000..ccf32b8
--- /dev/null
+++ b/src/utils/eth.utils.ts
@@ -0,0 +1,33 @@
+import { BigNumber, ethers } from 'ethers'
+
+/**
+ * Multiply ETH result by this to get ETH amount with a margin
+ */
+export const MULTIPLY_ETH_RESULT_FACTOR = 2;
+
+/**
+ * Rounds wei value to ether with maxDecimals
+ * @param weiValue Wei value to round
+ * @param maxDecimals Max decimals to round to
+ */
+export function roundWeiToEther(weiValue: BigNumber, maxDecimals: number = 5): string {
+  const divider = ethers.BigNumber.from('10').pow(18 - maxDecimals);
+  const roundUpValue = ethers.BigNumber.from('10').pow(18 - maxDecimals - 1);
+  const smallestUnit = ethers.BigNumber.from('10').pow(18 - maxDecimals);
+
+  let roundedValue = weiValue.div(divider).mul(divider);
+
+  if (weiValue.isZero()) {
+    return '0';
+  }
+
+  if(weiValue.mod(divider).gte(roundUpValue)){
+    roundedValue = roundedValue.add(divider);
+  }
+
+  if (roundedValue.isZero()) {
+    roundedValue = smallestUnit;
+  }
+
+  return ethers.utils.formatUnits(roundedValue, 18);
+}
diff --git a/test/utils.spec.ts b/test/utils.spec.ts
new file mode 100644
index 0000000..4cef12d
--- /dev/null
+++ b/test/utils.spec.ts
@@ -0,0 +1,22 @@
+import { utils } from 'ethers'
+import { roundWeiToEther } from '../src/utils/eth.utils'
+
+describe("Utils", () => {
+  test("roundWeiToEther", async () => {
+    const roundTest = (input: string, expected: string) => {
+      expect(roundWeiToEther(utils.parseEther(input))).toEqual(expected);
+    }
+
+    roundTest('0.000000012443523451', '0.00001');
+    roundTest('0.0001244352345', '0.00013');
+    roundTest('0.0001', '0.0001');
+    roundTest('505', '505.0');
+    roundTest('1', '1.0');
+    roundTest('1.01', '1.01');
+    roundTest('1.001', '1.001');
+    roundTest('1.0001', '1.0001');
+    roundTest('1.00001', '1.00001');
+    roundTest('1.000011', '1.00002');
+    roundTest('2342352352352352341.000011', '2342352352352352341.00002');
+  });
+});