diff --git a/conf/config.json b/conf/config.json
index bb800325..0063ee9a 100644
--- a/conf/config.json
+++ b/conf/config.json
@@ -14,6 +14,7 @@
     "hashing_default_password": true,
     "localstorage.allowsymlinks": true,
     "simpleSignUpLink.shown": false,
+    "default_phone_region": "",
     "maintenance_window_start": 1,
     "mail_smtpmode": "smtp",
     "mail_smtpport": "25",
diff --git a/manifest.toml b/manifest.toml
index c11eb993..eb0b9f2b 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -27,7 +27,7 @@ multi_instance = true
 ldap = true
 sso = true
 
-disk = "650M"
+disk = "850M"
 ram.build = "250M"
 ram.runtime = "512M"
 
@@ -116,7 +116,8 @@ ram.runtime = "512M"
     api.allowed = ["visitors", "all_users"]
 
     [resources.apt]
-    packages = "mariadb-server, imagemagick, libmagickcore-6.q16-6-extra, acl, tar, smbclient, at, redis-server, php8.3-fpm, php8.3-bz2, php8.3-imap, php8.3-gmp, php8.3-gd, php8.3-intl, php8.3-curl, php8.3-apcu, php8.3-redis, php8.3-ldap, php8.3-imagick, php8.3-zip, php8.3-mbstring, php8.3-xml, php8.3-mysql, php8.3-igbinary, php8.3-bcmath"
+    packages = "postgresql, imagemagick, libmagickcore-6.q16-6-extra, acl, tar, smbclient, at, redis-server, php8.3-pgsql, php8.3-mysql, php8.3-fpm, php8.3-bz2, php8.3-imap, php8.3-gmp, php8.3-gd, php8.3-intl, php8.3-curl, php8.3-apcu, php8.3-redis, php8.3-ldap, php8.3-imagick, php8.3-zip, php8.3-mbstring, php8.3-xml, php8.3-igbinary, php8.3-bcmath"
 
     [resources.database]
-    type = "mysql"
+    type = "postgresql"
+    
\ No newline at end of file
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 33c1736a..19c0decc 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -4,6 +4,12 @@
 # COMMON VARIABLES AND CUSTOM HELPERS
 #=================================================
 
+# Define a function to execute commands with `occ`
+exec_occ() {
+  (cd "$install_dir" && ynh_exec_as_app \
+      php${php_version} --define apc.enable_cli=1 occ --no-interaction --no-ansi "$@")
+}
+
 wait_nginx_reload() {
     # NGINX may take some time to support the new configuration,
     # wait for the Nextcloud configuration file to disappear from NGINX before checking the CalDAV/CardDAV URL.
diff --git a/scripts/backup b/scripts/backup
index 33c0c7f1..7c48d677 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -40,11 +40,11 @@ ynh_backup "/etc/cron.d/$app"
 ynh_backup "/var/log/$app"
 
 #=================================================
-# BACKUP THE MYSQL DATABASE
+# BACKUP THE POSTGRESQL DATABASE
 #=================================================
-ynh_print_info "Backing up the MySQL database..."
+ynh_print_info "Backing up the PostgreSQL database..."
 
-ynh_mysql_dump_db > db.sql
+ynh_psql_dump_db > db.sql
 
 #=================================================
 # BACKUP THE NOTIFY_PUSH APP
diff --git a/scripts/change_url b/scripts/change_url
index 509b92dc..2277ed4f 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -29,10 +29,10 @@ ynh_config_change_url_nginx
 ynh_script_progression "Applying $app specific modifications..."
 
 # Define a function to execute commands with `occ`
-exec_occ() {
-  (cd "$install_dir" && ynh_exec_as_app \
-      php${php_version} --define apc.enable_cli=1 occ --no-interaction --no-ansi "$@")
-}
+#exec_occ() {
+#  (cd "$install_dir" && ynh_exec_as_app \
+#      php${php_version} --define apc.enable_cli=1 occ --no-interaction --no-ansi "$@")
+#}
 
 if [ $change_domain -eq 1 ]
 then
diff --git a/scripts/config b/scripts/config
index fc45c353..447e3c34 100644
--- a/scripts/config
+++ b/scripts/config
@@ -10,10 +10,10 @@ source /usr/share/yunohost/helpers
 php_version=$(ynh_app_setting_get --key=php_version)
 current_fpm_footprint=$(ynh_app_setting_get --key=fpm_footprint)
 
-exec_occ() {
-  (cd "$install_dir" && ynh_exec_as_app \
-      php${php_version} --define apc.enable_cli=1 occ --no-interaction --no-ansi "$@")
-}
+#exec_occ() {
+#  (cd "$install_dir" && ynh_exec_as_app \
+#      php${php_version} --define apc.enable_cli=1 occ --no-interaction --no-ansi "$@")
+#}
 
 #=================================================
 # SPECIFIC GETTERS FOR TOML SHORT KEY
diff --git a/scripts/install b/scripts/install
index cd270cc0..eb866c50 100755
--- a/scripts/install
+++ b/scripts/install
@@ -22,13 +22,6 @@ ynh_app_setting_set --key=enable_notify_push --value=0
 system_addressbook_exposed="0"
 ynh_app_setting_set --key=system_addressbook_exposed --value=0
 
-#=================================================
-# CREATE A MYSQL DATABASE
-#=================================================
-ynh_script_progression "Migrate MySQL database to utf8..."
-
-ynh_mysql_db_shell <<< "ALTER DATABASE $db_name CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;"
-
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
@@ -73,10 +66,10 @@ ynh_config_add_nginx
 ynh_script_progression "Installing $app..."
 
 # Define a function to execute commands with `occ`
-exec_occ() {
-  (cd "$install_dir" && ynh_exec_as_app \
-      php${php_version} --define apc.enable_cli=1 occ --no-interaction --no-ansi "$@")
-}
+#exec_occ() {
+#  (cd "$install_dir" && ynh_exec_as_app \
+#      php${php_version} --define apc.enable_cli=1 occ --no-interaction --no-ansi "$@")
+#}
 
 # Set write access for the following commands
 chown -R $app:www-data "$install_dir"
@@ -89,7 +82,7 @@ admin_password="$(ynh_string_random --length=6)"
 
 # Install Nextcloud using a temporary admin user
 exec_occ maintenance:install \
-    --database "mysql" --database-name $db_name \
+    --database "pgsql" --database-name $db_name \
     --database-user $db_user --database-pass "$db_pwd" \
     --admin-user "admin" --admin-pass "$admin_password" \
     --data-dir "$data_dir/data" \
@@ -100,9 +93,6 @@ exec_occ maintenance:install \
 #=================================================
 ynh_script_progression "Configuring $app..."
 
-# Set the mysql.utf8mb4 config to true in config.php
-exec_occ config:system:set mysql.utf8mb4 --type boolean --value="true"
-
 # move the logs from the data_dir to the standard /var/log
 exec_occ config:system:set logfile --value="/var/log/$app/nextcloud.log"
 
@@ -189,7 +179,7 @@ exec_occ config:system:set overwrite.cli.url --value="https://${domain}${path}"
 #=================================================
 
 # Set the user as admin
-ynh_mysql_db_shell <<< "INSERT INTO oc_group_user VALUES ('admin','$admin');"
+ynh_psql_db_shell <<< "INSERT INTO oc_group_user VALUES ('admin','$admin');"
 
 # And delete admin user
 exec_occ user:delete admin
@@ -253,10 +243,12 @@ ynh_script_progression "Adding multimedia directories..."
 
 # Build YunoHost multimedia directories
 ynh_multimedia_build_main_dir
+
 # Mount the user directory in Nextcloud
 exec_occ app:enable files_external
 create_external_storage "/home/yunohost.multimedia/\$user" "Multimedia"
 create_external_storage "/home/yunohost.multimedia/share" "Shared multimedia"
+
 # Allow nextcloud to write into these directories
 ynh_multimedia_addaccess $app
 
diff --git a/scripts/remove b/scripts/remove
index c506c10c..5a5ed392 100755
--- a/scripts/remove
+++ b/scripts/remove
@@ -9,6 +9,7 @@ source /usr/share/yunohost/helpers
 ynh_script_progression "Removing system configurations related to $app..."
 
 ynh_config_remove_nginx
+
 ynh_safe_rm "/etc/nginx/conf.d/$domain.d/$app.d"
 
 ynh_config_remove_phpfpm
diff --git a/scripts/restore b/scripts/restore
index 9be6e2b8..649374e3 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -11,11 +11,11 @@ ynh_script_progression "Restoring the app main directory..."
 ynh_restore "$install_dir"
 
 #=================================================
-# RESTORE THE MYSQL DATABASE
+# RESTORE THE POSTGRESQL DATABASE
 #=================================================
-ynh_script_progression "Restoring the MySQL database..."
+ynh_script_progression "Restoring the PostgreSQL database..."
 
-ynh_mysql_db_shell < ./db.sql
+ynh_psql_db_shell < ./db.sql
 
 #=================================================
 # RESTORE THE PHP-FPM CONFIGURATION
@@ -146,10 +146,10 @@ ynh_systemctl --service=nginx --action=reload
 # CHECK IF NOTIFY_PUSH WORKS
 #=================================================
 
-exec_occ() {
-  (cd "$install_dir" && ynh_exec_as_app \
-      php${php_version} --define apc.enable_cli=1 occ --no-interaction --no-ansi "$@")
-}
+#exec_occ() {
+#  (cd "$install_dir" && ynh_exec_as_app \
+#      php${php_version} --define apc.enable_cli=1 occ --no-interaction --no-ansi "$@")
+#}
 
 if [ $enable_notify_push -eq 1 ]
 then
diff --git a/scripts/upgrade b/scripts/upgrade
index 12fe5a7b..f99bfefb 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -54,6 +54,12 @@ filter_boring_occ_warnings() {
     sed -E 's@\s*([0-9]+\/[0-9]+\s+\[(-|>|=)+\]\s+[0-9]+%|\s*Starting ...|Nextcloud or one of the apps require upgrade - only a limited number of commands are available|You may use your browser or the occ upgrade command to do the upgrade)@@g'
 }
 
+current_version=$(grep OC_VersionString "$install_dir/version.php" | cut -d\' -f2)
+current_major_version=${current_version%%.*}
+
+last_version=$(ynh_read_manifest "resources.sources.main.url" | grep -Eo '[0-9][0-9]\.[0-9]\.[0-9]+')
+last_major_version=${last_version%%.*}
+
 # Define a function to execute commands with `occ`
 exec_occ() {
     # Backward compatibility to upgrade from older versions
@@ -87,6 +93,35 @@ exec_occ() {
     php$NEXTCLOUD_PHP_VERSION --define apc.enable_cli=1 occ --no-interaction --no-ansi "$@") 2> >(filter_boring_occ_warnings >&2)
 }
 
+#=================================================
+# HANDLE DATABASE MIGRATION FROM MYSL TO PSQL
+#=================================================
+
+# If we're moving through version 29.0.10~ynh1 (in which the switch to PostgreSQL is made)
+if ynh_app_upgrading_from_version_before 29.0.10~ynh1
+then
+    # Double-check the MySQL database is here
+    if ! mysql -e "USE $db_name" 2>/dev/null 
+    then
+        ynh_print_warn "Uhoh? The Nextcloud MySQL database doesn't exist? We are supposed to move it to PostgreSQL... Maybe it was already migrated?"
+        # Double check the psql is not empty, otherwise big whoops?
+        if [[ "$(ynh_psql_db_shell --database=$db_name --sql="\dt" 2>/dev/null | wc -l)" == 0 ]]
+        then
+                ynh_die "Apparently the PostgreSQL database is also empty, this is kind of worrying, what happened?!"
+        else
+                ynh_print_warn "Apparently the PostgreSQL database is not empty, so this is probably OK?"
+        fi
+    else
+        ynh_print_info "Migrating to PostgreSQL database..."
+        exec_occ db:convert-type --all-apps --clear-schema pgsql $db_name 127.0.0.1 $db_name --password=$db_pwd -n
+        ynh_mysql_drop_db $db_name
+    fi
+fi
+
+#=================================================
+# DOWNLOAD, CHECK AND UNPACK SOURCE
+#=================================================
+
 # Define a function to add an external storage
 # Create the external storage for the given folders and enable sharing
 create_external_storage() {
@@ -122,11 +157,7 @@ function list_installed_apps_not_compatible_with_future_version()
     comm -23 <(comm -23 $installed_apps $core_apps_in_current_version) $nextcloud_destination_appcatalog
 }
 
-current_version=$(grep OC_VersionString "$install_dir/version.php" | cut -d\' -f2)
-current_major_version=${current_version%%.*}
 
-last_version=$(ynh_read_manifest "resources.sources.main.url" | grep -Eo '[0-9][0-9]\.[0-9]\.[0-9]+')
-last_major_version=${last_version%%.*}
 
 if [[ "$last_major_version" != "$current_major_version" ]]
 then
@@ -147,15 +178,6 @@ then
     # Print the current version number of Nextcloud
     exec_occ -V
 
-    if [ "$(exec_occ config:system:get mysql.utf8mb4)" != "true" ]; then
-        db_pwd=$(ynh_app_setting_get --key=db_pwd)
-        # Change your databases character set and collation
-        ynh_mysql_db_shell <<< "ALTER DATABASE $db_name CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;"
-        # Set the mysql.utf8mb4 config to true in config.php
-        exec_occ config:system:set mysql.utf8mb4 --type boolean --value="true"
-        exec_occ maintenance:repair
-    fi
-
     # Upgrade may fail if this app is enabled
     # Take all apps enabled, and check if mail is one of them
     # Then temporary disable the mail app
@@ -269,6 +291,11 @@ then
     # Then remove the config file
     ynh_safe_rm "$nc_conf"
 
+    # Occasionally new mimetypes are added to better handle certain file types.
+    # Migrating the mimetypes take a long time on larger instances
+    # so this is not done automatically during upgrades.
+    exec_occ maintenance:repair --include-expensive
+
     #=================================================
     # ALLOW USERS TO DISCONNECT FROM NEXTCLOUD
     #=================================================
@@ -374,7 +401,6 @@ then
     ynh_config_add --template="notify_push.conf" --destination="$nginx_extra_conf_dir/notify_push.conf"
 fi
 
-# Create a dedicated NGINX config
 ynh_config_add_nginx
 
 #=================================================
@@ -424,7 +450,6 @@ ynh_config_add_logrotate
 # FAIL2BAN
 #=================================================
 
-# Create a dedicated Fail2Ban config
 ynh_config_add_fail2ban --logpath="/var/log/$app/nextcloud.log" --failregex="^.*Login failed: '.*' \(Remote IP: '<HOST>'.*$"
 
 #=================================================