diff --git a/Classes/Controller/ModuleController.php b/Classes/Controller/ModuleController.php
index 323f836f..b669c49c 100644
--- a/Classes/Controller/ModuleController.php
+++ b/Classes/Controller/ModuleController.php
@@ -552,7 +552,7 @@ public function ajaxGroupsImport(ServerRequestInterface $request): ResponseInter
 			// Merge LDAP and TYPO3 information
 			$group = Authentication::merge($ldapGroup, $typo3Groups[0], $config['groups']['mapping']);
 
-			if ((int)$group['uid'] === 0) {
+			if ((int)($group['uid'] ?? 0) === 0) {
 				$group = Typo3GroupRepository::add($table, $group);
 			} else {
 				// Restore group that may have been previously deleted
diff --git a/Classes/Task/ImportUsers.php b/Classes/Task/ImportUsers.php
index cc47abeb..b256cce6 100644
--- a/Classes/Task/ImportUsers.php
+++ b/Classes/Task/ImportUsers.php
@@ -173,7 +173,7 @@ public function execute()
 
                             // Import the user using information from LDAP
                             $restoreBehaviour = $this->restoredUsersHandling;
-                            if (in_array($user['uid'], $disabledOrDeletedUserUids, true)) {
+                            if (in_array($user['uid'] ?? 0, $disabledOrDeletedUserUids, true)) {
                                 // We disabled this user ourselves
                                 if ($this->missingUsersHandling === 'disable') {
                                     if ($restoreBehaviour === 'nothing') {
diff --git a/Resources/Private/Language/locallang.xlf b/Resources/Private/Language/locallang.xlf
index e51d0732..a68b2b24 100644
--- a/Resources/Private/Language/locallang.xlf
+++ b/Resources/Private/Language/locallang.xlf
@@ -23,6 +23,13 @@
 				<source><![CDATA[This module cannot be used until you create at least one configuration record. Please refer to the <a href="%s" target="_blank">administrator manual</a> for further information.<br /><br /><a href="%s">Click here</a> to create a configuration record.]]></source>
 			</trans-unit>
 
+			<trans-unit id="module_docheader.configurations.switch">
+				<source>Switch configuration</source>
+			</trans-unit>
+			<trans-unit id="module_docheader.configurations.edit">
+				<source>Edit current configuration</source>
+			</trans-unit>
+
 			<trans-unit id="module_overview">
 				<source>Overview</source>
 			</trans-unit>
diff --git a/Resources/Private/Partials/ConfigurationRecords.html b/Resources/Private/Partials/ConfigurationRecords.html
index 82f600bf..869009cf 100644
--- a/Resources/Private/Partials/ConfigurationRecords.html
+++ b/Resources/Private/Partials/ConfigurationRecords.html
@@ -8,20 +8,25 @@
 		<f:format.raw>{editLink}</f:format.raw>
 	</f:then>
 	<f:else>
-		<f:form action="{action}" method="post" class="form-inline">
-			<div class="form-group form-group-sm">
+		<f:form action="{action}" method="post" class="form-inline;">
+			<div class="form-group" style="display: flex;">
 				<f:form.select name="configuration"
 							   options="{configurationRecords}"
 							   value="{currentConfiguration}"
 							   optionValueField="uid"
 							   optionLabelField="name"
-							   class="form-select form-select-sm form-control"/>
+							   class="form-select"
+							   style="display: inline-flex; width: 100%;"/>
 
-				<div style="display: inline-block; margin-left: 5px;">
-					<f:format.raw>{editLink}</f:format.raw>
-				</div>
+				<f:form.submit
+						class="form-submit form-submit-sm form-control"
+						style="margin-inline-start: 1rem;"
+						value="{f:translate(key: 'module_docheader.configurations.switch')}"/>
+
+			</div>
+			<div style="margin-block-start: .5rem; display: flex;">
+				<span style="margin-inline: .375rem;">{f:translate(key: 'module_docheader.configurations.edit')}</span> <f:format.raw>{editLink}</f:format.raw>
 			</div>
-			<f:form.submit/>
 		</f:form>
 	</f:else>
 </f:if>
diff --git a/composer.json b/composer.json
index 34acd5de..9c9daa40 100644
--- a/composer.json
+++ b/composer.json
@@ -23,7 +23,7 @@
   ],
   "license": "GPL-2.0-or-later",
   "require": {
-    "php": ">=8.1.0 <=8.2.99",
+    "php": ">=8.1.0 <=8.3.99",
     "ext-ldap": "*",
     "ext-json": "*",
     "typo3/cms-core": "^12"