diff --git a/README.md b/README.md
index 1347b5e..c41448d 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ If you don't have YunoHost, please consult [the guide](https://yunohost.org/#/in
 Listmonk is a standalone, self-hosted, newsletter and mailing list manager. It is fast, feature-rich, and packed into a single binary. It uses a PostgreSQL (⩾ v9.4) database as its data store.
 
 
-**Shipped version:** 2.3.0~ynh3
+**Shipped version:** 2.3.0~ynh4
 
 **Demo:** https://demo.listmonk.app/
 
diff --git a/README_fr.md b/README_fr.md
index 6ea512c..6f3ea09 100644
--- a/README_fr.md
+++ b/README_fr.md
@@ -19,7 +19,7 @@ Si vous n’avez pas YunoHost, regardez [ici](https://yunohost.org/#/install) po
 Listmonk is a standalone, self-hosted, newsletter and mailing list manager. It is fast, feature-rich, and packed into a single binary. It uses a PostgreSQL (⩾ v9.4) database as its data store.
 
 
-**Version incluse :** 2.3.0~ynh3
+**Version incluse :** 2.3.0~ynh4
 
 **Démo :** https://demo.listmonk.app/
 
diff --git a/check_process b/check_process
deleted file mode 100644
index 32fb117..0000000
--- a/check_process
+++ /dev/null
@@ -1,26 +0,0 @@
-;; Test complet
-	; Manifest
-		domain="domain.tld"
-		path="/path"
-		is_public=1
-		admin="john"
-		password="1Strong-Password"
-	; Checks
-		pkg_linter=1
-		setup_sub_dir=0
-		setup_root=1
-		setup_nourl=0
-		setup_private=1
-		setup_public=1
-		upgrade=1
-		#upgrade=1	from_commit=CommitHash
-		backup_restore=1
-		multi_instance=1
-		change_url=1
-;;; Options
-Email=
-Notification=none
-;;; Upgrade options
-	; commit=CommitHash
-		name=Name and date of the commit.
-		manifest_arg=domain=DOMAIN&path=PATH&is_public=1&language=fr&admin=USER&password=pass&port=666&
diff --git a/conf/amd64.src b/conf/amd64.src
deleted file mode 100644
index 13d7501..0000000
--- a/conf/amd64.src
+++ /dev/null
@@ -1,7 +0,0 @@
-SOURCE_URL=https://github.com/knadh/listmonk/releases/download/v2.2.0/listmonk_2.2.0_linux_amd64.tar.gz
-SOURCE_SUM=c2bdccd073d768d2b8dfbfad6469c5b41cf39b44a20c263cbaebf15876463709
-SOURCE_SUM_PRG=sha256sum
-SOURCE_FORMAT=tar.gz
-SOURCE_IN_SUBDIR=false
-SOURCE_FILENAME=
-SOURCE_EXTRACT=true
diff --git a/conf/app.src b/conf/app.src
deleted file mode 100644
index 7dbafc6..0000000
--- a/conf/app.src
+++ /dev/null
@@ -1,7 +0,0 @@
-SOURCE_URL=https://github.com/knadh/listmonk/archive/refs/tags/v2.2.0.tar.gz
-SOURCE_SUM=6eef831f7ceef80624ae69cd7020504344410d0f8015a0e150b88d324894ca8d
-SOURCE_SUM_PRG=sha256sum
-SOURCE_FORMAT=tar.gz
-SOURCE_IN_SUBDIR=true
-SOURCE_FILENAME=
-SOURCE_EXTRACT=true
diff --git a/conf/nginx.conf b/conf/nginx.conf
index f17172c..903c9b4 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -1,4 +1,5 @@
-location / {
+#sub_path_only rewrite ^__PATH__$ __PATH__/ permanent;
+location __PATH__/ {
 
   proxy_pass        http://127.0.0.1:__PORT__/;
   proxy_redirect    off;
diff --git a/conf/systemd.service b/conf/systemd.service
index a5fcd31..7ed37f5 100644
--- a/conf/systemd.service
+++ b/conf/systemd.service
@@ -6,9 +6,44 @@ Documentation=https://listmonk.app/docs/
 Type=simple
 User=__APP__
 Group=__APP__
-WorkingDirectory=__FINALPATH__/
-ExecStart=__FINALPATH__/listmonk
+WorkingDirectory=__INSTALL_DIR__/
+ExecStart=__INSTALL_DIR__/listmonk
 Restart=always
 
+
+# Sandboxing options to harden security
+# Depending on specificities of your service/app, you may need to tweak these
+# .. but this should be a good baseline
+# Details for these options: https://www.freedesktop.org/software/systemd/man/systemd.exec.html
+NoNewPrivileges=yes
+PrivateTmp=yes
+PrivateDevices=yes
+RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6 AF_NETLINK
+RestrictNamespaces=yes
+RestrictRealtime=yes
+DevicePolicy=closed
+ProtectClock=yes
+ProtectHostname=yes
+ProtectProc=invisible
+ProtectSystem=full
+ProtectControlGroups=yes
+ProtectKernelModules=yes
+ProtectKernelTunables=yes
+LockPersonality=yes
+SystemCallArchitectures=native
+SystemCallFilter=~@clock @debug @module @mount @obsolete @reboot @setuid @swap @cpu-emulation @privileged
+
+# Denying access to capabilities that should not be relevant for webapps
+# Doc: https://man7.org/linux/man-pages/man7/capabilities.7.html
+CapabilityBoundingSet=~CAP_RAWIO CAP_MKNOD
+CapabilityBoundingSet=~CAP_AUDIT_CONTROL CAP_AUDIT_READ CAP_AUDIT_WRITE
+CapabilityBoundingSet=~CAP_SYS_BOOT CAP_SYS_TIME CAP_SYS_MODULE CAP_SYS_PACCT
+CapabilityBoundingSet=~CAP_LEASE CAP_LINUX_IMMUTABLE CAP_IPC_LOCK
+CapabilityBoundingSet=~CAP_BLOCK_SUSPEND CAP_WAKE_ALARM
+CapabilityBoundingSet=~CAP_SYS_TTY_CONFIG
+CapabilityBoundingSet=~CAP_MAC_ADMIN CAP_MAC_OVERRIDE
+CapabilityBoundingSet=~CAP_NET_ADMIN CAP_NET_BROADCAST CAP_NET_RAW
+CapabilityBoundingSet=~CAP_SYS_ADMIN CAP_SYS_PTRACE CAP_SYSLOG
+
 [Install]
 WantedBy=multi-user.target
diff --git a/doc/DISCLAIMER.md b/doc/DISCLAIMER.md
deleted file mode 100644
index e69de29..0000000
diff --git a/manifest.json b/manifest.json
deleted file mode 100644
index 2ac0632..0000000
--- a/manifest.json
+++ /dev/null
@@ -1,52 +0,0 @@
-{
-    "name": "Listmonk",
-    "id": "listmonk",
-    "packaging_format": 1,
-    "description": {
-        "en": "Newsletter and mailing list manager",
-        "fr": "Manager de newsletter et mailing list"
-    },
-    "version": "2.3.0~ynh3",
-    "url": "https://listmonk.app/",
-    "upstream": {
-        "license": "AGPL-3.0-only",
-        "website": "https://listmonk.app/",
-        "demo": "https://demo.listmonk.app/",
-        "admindoc": "https://listmonk.app/docs/",
-        "code": "https://github.com/knadh/listmonk"
-    },
-    "license": "AGPL-3.0-only",
-    "maintainer": {
-        "name": "Navan Chauhan",
-        "email": "listmonk@navan.email"
-    },
-    "requirements": {
-        "yunohost": ">= 11.0.9"
-    },
-    "multi_instance": true,
-    "services": [
-        "nginx",
-        "mysql"
-    ],
-    "arguments": {
-        "install" : [
-            {
-                "name": "domain",
-                "type": "domain"
-            },
-            {
-                "name": "is_public",
-                "type": "boolean",
-                "default": true
-            },
-            {
-                "name": "admin",
-                "type": "user"
-            },
-            {
-                "name": "password",
-                "type": "password"
-            }
-        ]
-    }
-}
diff --git a/manifest.toml b/manifest.toml
new file mode 100644
index 0000000..677cd59
--- /dev/null
+++ b/manifest.toml
@@ -0,0 +1,85 @@
+packaging_format = 2
+
+id = "listmonk"
+name = "Listmonk"
+description.en = "Newsletter and mailing list manager"
+description.fr = "Manager de newsletter et mailing list"
+
+version = "2.3.0~ynh4"
+
+maintainers = ["Navan Chauhan"]
+
+[upstream]
+license = "AGPL-3.0-only"
+website = "https://listmonk.app/"
+demo = "https://demo.listmonk.app/"
+admindoc = "https://listmonk.app/docs/"
+code = "https://github.com/knadh/listmonk"
+
+[integration]
+yunohost = ">= 11.1.15"
+architectures = ["amd64"]
+multi_instance = true
+ldap = false
+sso = false
+disk = "50M"
+ram.build = "50M"
+ram.runtime = "50M"
+
+[install]
+    [install.domain]
+    type = "domain"
+    full_domain = true
+
+    [install.init_main_permission]
+    type = "group"
+    default = "visitors"
+
+    [install.admin]
+    type = "user"
+
+    [install.password]
+    type = "password"
+
+[resources]
+
+    [resources.sources]
+
+        [resources.sources.main]
+        url = "https://github.com/knadh/listmonk/releases/download/v2.3.0/listmonk_2.3.0_linux_amd64.tar.gz"
+        sha256 = "4ad9ff7a04e13c9f8609c705e4850046ae8a3c9a03b0c4ac04e3c1d1c8fe8b7a"
+        in_subdir = false
+
+        [resources.sources.arm]
+        url = "https://github.com/knadh/listmonk/archive/refs/tags/v2.3.0.tar.gz"
+        sha256 = "54cab80ca16dbf58ce40b7fc1ae88a9f8ed4c9d9a54387a77b1a90cb4dba3404"
+
+    [resources.system_user]
+
+    [resources.ports]
+
+    [resources.install_dir]
+
+    [resources.permissions]
+    main.url = "/"
+    main.auth_header = false
+
+    admin.url = "/admin"
+    admin.show_tile = false
+    admin.auth_header = false
+    admin.allowed = "admins"
+
+    api.url = "/api"
+    api.show_tile = false
+    api.auth_header = false
+    api.allowed = "visitors"
+
+    [resources.apt]
+    packages = "postgresql"
+
+    extras.yarn.repo = "deb https://dl.yarnpkg.com/debian/ stable main"
+    extras.yarn.key = "https://dl.yarnpkg.com/debian/pubkey.gpg"
+    extras.yarn.packages = "yarn"
+
+    [resources.database]
+    type = "postgresql"
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 594d494..ee6cfc8 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -4,9 +4,6 @@
 # COMMON VARIABLES
 #=================================================
 
-# dependencies used by the app
-pkg_dependencies="postgresql"
-
 nodejs_version=16
 GO_VERSION="1.18"
 
diff --git a/scripts/backup b/scripts/backup
index 5f340bc..59c90ce 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -10,28 +10,6 @@
 source ../settings/scripts/_common.sh
 source /usr/share/yunohost/helpers
 
-#=================================================
-# MANAGE SCRIPT FAILURE
-#=================================================
-
-ynh_clean_setup () {
-	### Remove this function if there's nothing to clean before calling the remove script.
-	true
-}
-# Exit if an error occurs during the execution of the script
-ynh_abort_if_errors
-
-#=================================================
-# LOAD SETTINGS
-#=================================================
-ynh_print_info --message="Loading installation settings..."
-
-app=$YNH_APP_INSTANCE_NAME
-
-final_path=$(ynh_app_setting_get --app=$app --key=final_path)
-domain=$(ynh_app_setting_get --app=$app --key=domain)
-db_name=$(ynh_app_setting_get --app=$app --key=db_name)
-
 #=================================================
 # DECLARE DATA AND CONF FILES TO BACKUP
 #=================================================
@@ -41,7 +19,7 @@ ynh_print_info --message="Declaring files to be backed up..."
 # BACKUP THE APP MAIN DIR
 #=================================================
 
-ynh_backup --src_path="$final_path"
+ynh_backup --src_path="$install_dir"
 
 #=================================================
 # BACKUP THE NGINX CONFIGURATION
diff --git a/scripts/change_url b/scripts/change_url
index 76b4138..3a9b28d 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -9,60 +9,6 @@
 source _common.sh
 source /usr/share/yunohost/helpers
 
-#=================================================
-# RETRIEVE ARGUMENTS
-#=================================================
-
-old_domain=$YNH_APP_OLD_DOMAIN
-old_path=$YNH_APP_OLD_PATH
-
-new_domain=$YNH_APP_NEW_DOMAIN
-new_path=$YNH_APP_NEW_PATH
-
-app=$YNH_APP_INSTANCE_NAME
-
-#=================================================
-# LOAD SETTINGS
-#=================================================
-ynh_script_progression --message="Loading installation settings..." --weight=1
-
-# Needed for helper "ynh_add_nginx_config"
-final_path=$(ynh_app_setting_get --app=$app --key=final_path)
-port=$(ynh_app_setting_get --app=$app --key=port)
-
-#=================================================
-# BACKUP BEFORE CHANGE URL THEN ACTIVE TRAP
-#=================================================
-ynh_script_progression --message="Backing up the app before changing its URL (may take a while)..." --weight=1
-
-# Backup the current version of the app
-ynh_backup_before_upgrade
-ynh_clean_setup () {
-	# Remove the new domain config file, the remove script won't do it as it doesn't know yet its location.
-	ynh_secure_remove --file="/etc/nginx/conf.d/$new_domain.d/$app.conf"
-
-	# Restore it if the upgrade fails
-	ynh_restore_upgradebackup
-}
-# Exit if an error occurs during the execution of the script
-ynh_abort_if_errors
-
-#=================================================
-# CHECK WHICH PARTS SHOULD BE CHANGED
-#=================================================
-
-change_domain=0
-if [ "$old_domain" != "$new_domain" ]
-then
-	change_domain=1
-fi
-
-change_path=0
-if [ "$old_path" != "$new_path" ]
-then
-	change_path=1
-fi
-
 #=================================================
 # STANDARD MODIFICATIONS
 #=================================================
@@ -77,29 +23,7 @@ ynh_systemd_action --service_name=$app --action="stop" --log_path="systemd"
 #=================================================
 ynh_script_progression --message="Updating NGINX web server configuration..." --weight=1
 
-nginx_conf_path=/etc/nginx/conf.d/$old_domain.d/$app.conf
-
-# Change the path in the NGINX config file
-if [ $change_path -eq 1 ]
-then
-	# Make a backup of the original NGINX config file if modified
-	ynh_backup_if_checksum_is_different --file="$nginx_conf_path"
-	# Set global variables for NGINX helper
-	domain="$old_domain"
-	path_url="$new_path"
-	# Create a dedicated NGINX config
-	ynh_add_nginx_config
-fi
-
-# Change the domain for NGINX
-if [ $change_domain -eq 1 ]
-then
-	# Delete file checksum for the old conf file location
-	ynh_delete_file_checksum --file="$nginx_conf_path"
-	mv $nginx_conf_path /etc/nginx/conf.d/$new_domain.d/$app.conf
-	# Store file checksum for the new config file location
-	ynh_store_file_checksum --file="/etc/nginx/conf.d/$new_domain.d/$app.conf"
-fi
+ynh_change_url_nginx_config
 
 #=================================================
 # GENERIC FINALISATION
@@ -110,13 +34,6 @@ ynh_script_progression --message="Starting a systemd service..." --weight=1
 
 ynh_systemd_action --service_name=$app --action="start" --log_path="systemd"
 
-#=================================================
-# RELOAD NGINX
-#=================================================
-ynh_script_progression --message="Reloading NGINX web server..." --weight=1
-
-ynh_systemd_action --service_name=nginx --action=reload
-
 #=================================================
 # END OF SCRIPT
 #=================================================
diff --git a/scripts/install b/scripts/install
index 84755ff..623e247 100755
--- a/scripts/install
+++ b/scripts/install
@@ -10,136 +10,60 @@ source _common.sh
 source ynh_install_go
 source /usr/share/yunohost/helpers
 
-#=================================================
-# MANAGE SCRIPT FAILURE
-#=================================================
-
-ynh_clean_setup () {
-	### Remove this function if there's nothing to clean before calling the remove script.
-	true
-}
-# Exit if an error occurs during the execution of the script
-ynh_abort_if_errors
-
 #=================================================
 # RETRIEVE ARGUMENTS FROM THE MANIFEST
 #=================================================
 
-domain=$YNH_APP_ARG_DOMAIN
-path_url="/"
-is_public=$YNH_APP_ARG_IS_PUBLIC
-admin=$YNH_APP_ARG_ADMIN
 password=$YNH_APP_ARG_PASSWORD
 
-app=$YNH_APP_INSTANCE_NAME
-
-#=================================================
-# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
-#=================================================
-ynh_script_progression --message="Validating installation parameters..." --weight=1
-
-# Check machine architecture (in particular, we don't support 32bit machines)
-if [ $YNH_ARCH == "i386" ] || [ $YNH_ARCH == "armel" ]
-then
-	ynh_die --message="Sorry, because of NodeJS framework, this app can't be installed on i386 (32 bits) or armel machine."
-fi
-
-final_path=/var/www/$app
-test ! -e "$final_path" || ynh_die --message="This path already contains a folder"
-
-# Register (book) web path
-ynh_webpath_register --app=$app --domain=$domain --path_url=$path_url
-
 #=================================================
 # STORE SETTINGS FROM MANIFEST
 #=================================================
-ynh_script_progression --message="Storing installation settings..." --weight=1
 
-ynh_app_setting_set --app=$app --key=domain --value=$domain
-ynh_app_setting_set --app=$app --key=path --value=$path_url
-ynh_app_setting_set --app=$app --key=admin --value=$admin
 ynh_app_setting_set --app=$app --key=password --value="$password"
 
-#=================================================
-# STANDARD MODIFICATIONS
-#=================================================
-# FIND AND OPEN A PORT
-#=================================================
-ynh_script_progression --message="Finding an available port..." --weight=1
-
-# Find an available port
-port=$(ynh_find_port --port=8095)
-ynh_app_setting_set --app=$app --key=port --value=$port
-
 #=================================================
 # INSTALL DEPENDENCIES
 #=================================================
 ynh_script_progression --message="Installing dependencies..." --weight=12
 
-ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies
-
 if [ $YNH_ARCH == "armhf" ] || [ $YNH_ARCH == "arm64" ]
 then
 	# Install Nodejs
 	ynh_exec_warn_less ynh_install_nodejs --nodejs_version=$nodejs_version
 
-	# Install Yarn
-	ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ stable main" --package="yarn" --key="https://dl.yarnpkg.com/debian/pubkey.gpg"
-
 	# Install Go
 	ynh_exec_warn_less ynh_install_go --go_version=$GO_VERSION
 fi
 
-#=================================================
-# CREATE DEDICATED USER
-#=================================================
-ynh_script_progression --message="Configuring system user..." --weight=1
-
-# Create a system user
-ynh_system_user_create --username=$app --home_dir="$final_path"
-
-#=================================================
-# CREATE A MYSQL DATABASE
-#=================================================
-ynh_script_progression --message="Creating a PostgreSQL database..." --weight=2
-
-db_name=$(ynh_sanitize_dbid --db_name=$app)
-db_user=$db_name
-ynh_app_setting_set --app=$app --key=db_name --value=$db_name
-ynh_psql_test_if_first_run
-ynh_psql_setup_db --db_user=$db_user --db_name=$db_name
-
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
 ynh_script_progression --message="Setting up source files..." --weight=3
 
-ynh_app_setting_set --app=$app --key=final_path --value=$final_path
-
 # Download, check integrity, uncompress and patch the source from app.src
 if [ $YNH_ARCH == "armhf" ] || [ $YNH_ARCH == "arm64" ]
 then
-	ynh_setup_source --dest_dir="$final_path/build"
-	pushd "$final_path/build"
+	ynh_setup_source --dest_dir="$install_dir/build" --source_id=arm
+	pushd "$install_dir/build"
 		# Build the sources
 		ynh_use_go
-		export GOPATH="$final_path/build/go"
-		export GOCACHE="$final_path/build/.cache"
+		export GOPATH="$install_dir/build/go"
+		export GOCACHE="$install_dir/build/.cache"
 		ynh_use_nodejs
 		make dist
 		mv listmonk ..
 	popd
 	ynh_remove_go
 	ynh_remove_nodejs
-	ynh_secure_remove --file="$final_path/build"
+	ynh_secure_remove --file="$install_dir/build"
 else
-	ynh_setup_source --dest_dir="$final_path" --source_id=$YNH_ARCH
+	ynh_setup_source --dest_dir="$install_dir"
 fi
 
-chmod 750 "$final_path"
-chmod -R o-rwx "$final_path"
-chown -R $app:www-data "$final_path"
-chmod +x "$final_path/listmonk"
+chmod -R o-rwx "$install_dir"
+chown -R $app:www-data "$install_dir"
+chmod +x "$install_dir/listmonk"
 
 #=================================================
 # NGINX CONFIGURATION
@@ -154,17 +78,17 @@ ynh_add_nginx_config
 #=================================================
 ynh_script_progression --message="Adding a configuration file..." --weight=1
 
-ynh_add_config --template="../conf/config.toml" --destination="$final_path/config.toml"
+ynh_add_config --template="../conf/config.toml" --destination="$install_dir/config.toml"
 
-chmod 400 "$final_path/config.toml"
-chown $app:$app "$final_path/config.toml"
+chmod 400 "$install_dir/config.toml"
+chown $app:$app "$install_dir/config.toml"
 
 #=================================================
 # DATABASE CONFIGURATION
 #=================================================
 ynh_script_progression --message="Generating database..." --weight=1
 
-pushd "$final_path"
+pushd "$install_dir"
 	yes | ./listmonk --install
 popd
 
@@ -191,32 +115,6 @@ ynh_script_progression --message="Starting a systemd service..." --weight=2
 # Start a systemd service
 ynh_systemd_action --service_name=$app --action="start" --log_path="systemd"
 
-#=================================================
-# SETUP SSOWAT
-#=================================================
-ynh_script_progression --message="Configuring permissions..." --weight=1
-
-# Make app public if necessary
-if [ $is_public -eq 1 ]
-then
-	ynh_permission_update --permission="main" --add="visitors"
-fi
-
-# Only the admin can access the admin panel of the app (if the app has an admin panel)
-ynh_permission_create --permission="admin" --url="/admin" --allowed=$admin --auth_header=false
-
-# Everyone can access the API part
-# We don't want to display the tile in the SSO so we put --show_tile="false"
-# And we don't want the YunoHost admin to be able to remove visitors group to this permission, so we put --protected="true"
-ynh_permission_create --permission="api" --url="/api" --allowed="visitors" --show_tile="false" --protected="true"
-
-#=================================================
-# RELOAD NGINX
-#=================================================
-ynh_script_progression --message="Reloading NGINX web server..." --weight=1
-
-ynh_systemd_action --service_name=nginx --action=reload
-
 #=================================================
 # END OF SCRIPT
 #=================================================
diff --git a/scripts/remove b/scripts/remove
index 3ceb755..4fec55d 100755
--- a/scripts/remove
+++ b/scripts/remove
@@ -9,19 +9,6 @@
 source _common.sh
 source /usr/share/yunohost/helpers
 
-#=================================================
-# LOAD SETTINGS
-#=================================================
-ynh_script_progression --message="Loading installation settings..." --weight=1
-
-app=$YNH_APP_INSTANCE_NAME
-
-domain=$(ynh_app_setting_get --app=$app --key=domain)
-port=$(ynh_app_setting_get --app=$app --key=port)
-db_name=$(ynh_app_setting_get --app=$app --key=db_name)
-db_user=$db_name
-final_path=$(ynh_app_setting_get --app=$app --key=final_path)
-
 #=================================================
 # STANDARD REMOVE
 #=================================================
@@ -43,22 +30,6 @@ ynh_script_progression --message="Stopping and removing the systemd service..."
 # Remove the dedicated systemd config
 ynh_remove_systemd_config
 
-#=================================================
-# REMOVE THE MYSQL DATABASE
-#=================================================
-ynh_script_progression --message="Removing the PostgreSQL database..." --weight=2
-
-# Remove a database if it exists, along with the associated user
-ynh_psql_remove_db --db_user=$db_user --db_name=$db_name
-
-#=================================================
-# REMOVE APP MAIN DIR
-#=================================================
-ynh_script_progression --message="Removing app main directory..." --weight=2
-
-# Remove the app directory securely
-ynh_secure_remove --file="$final_path"
-
 #=================================================
 # REMOVE NGINX CONFIGURATION
 #=================================================
@@ -67,24 +38,6 @@ ynh_script_progression --message="Removing NGINX web server configuration..." --
 # Remove the dedicated NGINX config
 ynh_remove_nginx_config
 
-#=================================================
-# REMOVE DEPENDENCIES
-#=================================================
-ynh_script_progression --message="Removing dependencies..." --weight=8
-
-# Remove metapackage and its dependencies
-ynh_remove_app_dependencies
-
-#=================================================
-# GENERIC FINALIZATION
-#=================================================
-# REMOVE DEDICATED USER
-#=================================================
-ynh_script_progression --message="Removing the dedicated system user..." --weight=1
-
-# Delete a system user
-ynh_system_user_delete --username=$app
-
 #=================================================
 # END OF SCRIPT
 #=================================================
diff --git a/scripts/restore b/scripts/restore
index 52da516..4593439 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -10,39 +10,6 @@
 source ../settings/scripts/_common.sh
 source /usr/share/yunohost/helpers
 
-#=================================================
-# MANAGE SCRIPT FAILURE
-#=================================================
-
-ynh_clean_setup () {
-	#### Remove this function if there's nothing to clean before calling the remove script.
-	true
-}
-# Exit if an error occurs during the execution of the script
-ynh_abort_if_errors
-
-#=================================================
-# LOAD SETTINGS
-#=================================================
-ynh_script_progression --message="Loading installation settings..." --weight=1
-
-app=$YNH_APP_INSTANCE_NAME
-
-domain=$(ynh_app_setting_get --app=$app --key=domain)
-path_url=$(ynh_app_setting_get --app=$app --key=path)
-final_path=$(ynh_app_setting_get --app=$app --key=final_path)
-db_name=$(ynh_app_setting_get --app=$app --key=db_name)
-db_user=$db_name
-db_pwd=$(ynh_app_setting_get --app=$app --key=psqlpwd)
-
-#=================================================
-# CHECK IF THE APP CAN BE RESTORED
-#=================================================
-ynh_script_progression --message="Validating restoration parameters..." --weight=1
-
-test ! -d $final_path \
-	|| ynh_die --message="There is already a directory: $final_path "
-
 #=================================================
 # STANDARD RESTORATION STEPS
 #=================================================
@@ -52,43 +19,22 @@ ynh_script_progression --message="Restoring the NGINX web server configuration..
 
 ynh_restore_file --origin_path="/etc/nginx/conf.d/$domain.d/$app.conf"
 
-#=================================================
-# RECREATE THE DEDICATED USER
-#=================================================
-ynh_script_progression --message="Recreating the dedicated system user..." --weight=1
-
-# Create the dedicated user (if not existing)
-ynh_system_user_create --username=$app --home_dir="$final_path"
-
 #=================================================
 # RESTORE THE APP MAIN DIR
 #=================================================
 ynh_script_progression --message="Restoring the app main directory..." --weight=3
 
-ynh_restore_file --origin_path="$final_path"
+ynh_restore_file --origin_path="$install_dir"
 
-chmod 750 "$final_path"
-chmod -R o-rwx "$final_path"
-chown -R $app:www-data "$final_path"
-chmod +x "$final_path/listmonk"
-
-#=================================================
-# SPECIFIC RESTORATION
-#=================================================
-# REINSTALL DEPENDENCIES
-#=================================================
-ynh_script_progression --message="Reinstalling dependencies..." --weight=10
-
-# Define and install dependencies
-ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies
+chmod -R o-rwx "$install_dir"
+chown -R $app:www-data "$install_dir"
+chmod +x "$install_dir/listmonk"
 
 #=================================================
 # RESTORE THE MYSQL DATABASE
 #=================================================
 ynh_script_progression --message="Restoring the PostgreSQL database..." --weight=6
 
-ynh_psql_test_if_first_run
-ynh_psql_setup_db --db_user=$db_user --db_name=$db_name --db_pwd=$db_pwd
 ynh_psql_execute_file_as_root --file="./db.sql" --database=$db_name
 
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index 3e21ffd..498e203 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -10,43 +10,12 @@ source _common.sh
 source ynh_install_go
 source /usr/share/yunohost/helpers
 
-#=================================================
-# LOAD SETTINGS
-#=================================================
-ynh_script_progression --message="Loading installation settings..." --weight=1
-
-app=$YNH_APP_INSTANCE_NAME
-
-domain=$(ynh_app_setting_get --app=$app --key=domain)
-path_url=$(ynh_app_setting_get --app=$app --key=path)
-admin=$(ynh_app_setting_get --app=$app --key=admin)
-final_path=$(ynh_app_setting_get --app=$app --key=final_path)
-db_name=$(ynh_app_setting_get --app=$app --key=db_name)
-db_user=$db_name
-db_pwd=$(ynh_app_setting_get --app=$app --key=psqlpwd)
-password=$(ynh_app_setting_get --app=$app --key=password)
-port=$(ynh_app_setting_get --app=$app --key=port)
-
 #=================================================
 # CHECK VERSION
 #=================================================
 
 upgrade_type=$(ynh_check_app_version_changed)
 
-#=================================================
-# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
-#=================================================
-ynh_script_progression --message="Backing up the app before upgrading (may take a while)..." --weight=1
-
-# Backup the current version of the app
-ynh_backup_before_upgrade
-ynh_clean_setup () {
-	# Restore it if the upgrade fails
-	ynh_restore_upgradebackup
-}
-# Exit if an error occurs during the execution of the script
-ynh_abort_if_errors
-
 #=================================================
 # STANDARD UPGRADE STEPS
 #=================================================
@@ -56,58 +25,6 @@ ynh_script_progression --message="Stopping a systemd service..." --weight=1
 
 ynh_systemd_action --service_name=$app --action="stop" --log_path="systemd"
 
-#=================================================
-# ENSURE DOWNWARD COMPATIBILITY
-#=================================================
-ynh_script_progression --message="Ensuring downward compatibility..." --weight=1
-
-# Cleaning legacy permissions
-if ynh_legacy_permissions_exists; then
-	ynh_legacy_permissions_delete_all
-
-	ynh_app_setting_delete --app=$app --key=is_public
-fi
-
-if ! ynh_permission_exists --permission="admin"; then
-	# Create the required permissions
-	ynh_permission_create --permission="admin" --url="/admin" --allowed=$admin --auth_header=false
-fi
-
-# Create a permission if needed
-if ! ynh_permission_exists --permission="api"; then
-	ynh_permission_create --permission="api" --url="/api" --allowed="visitors" --show_tile="false" --protected="true"
-fi
-
-if ynh_compare_current_package_version --comparison le --version 2.3.0~ynh3
-then
-	mkdir -p "$final_path/uploads"
-
-	ynh_permission_delete --permission="admin"
-	ynh_permission_delete --permission="api"
-
-	ynh_permission_create --permission="admin" --url="/admin" --additional_urls="/admin /api" --allowed=$admin --auth_header=false
-	ynh_permission_create --permission="api" --url="/public" --additional_urls="/api/public" --allowed="visitors" --show_tile="false" --protected="true"
-fi
-
-if ynh_compare_current_package_version --comparison le --version 2.3.0~ynh1
-then
-	mkdir -p "$final_path/uploads"
-
-	ynh_permission_delete --permission="admin"
-	ynh_permission_delete --permission="api"
-
-	ynh_permission_create --permission="admin" --url="/admin" --additional_urls="/admin /api" --allowed=$admin --auth_header=false
-	ynh_permission_create --permission="api" --url="/public" --additional_urls="/api/public" --allowed="visitors" --show_tile="false" --protected="true"
-fi
-
-#=================================================
-# CREATE DEDICATED USER
-#=================================================
-ynh_script_progression --message="Making sure dedicated system user exists..." --weight=1
-
-# Create a dedicated user (if not existing)
-ynh_system_user_create --username=$app --home_dir="$final_path"
-
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
@@ -119,34 +36,31 @@ then
 	# Download, check integrity, uncompress and patch the source from app.src
 	if [ $YNH_ARCH == "armhf" ] || [ $YNH_ARCH == "arm64" ]
 	then
-		ynh_setup_source --dest_dir="$final_path/build" --keep="$final_path/config.toml"
+		ynh_setup_source --dest_dir="$install_dir/build" --source_id=arm --keep="$install_dir/config.toml"
 		# Install Nodejs
 		ynh_exec_warn_less ynh_install_nodejs --nodejs_version=$nodejs_version
-		# Install Yarn
-		ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ stable main" --package="yarn" --key="https://dl.yarnpkg.com/debian/pubkey.gpg"
 		# Install Go
 		ynh_exec_warn_less ynh_install_go --go_version=$GO_VERSION
-		pushd "$final_path/build"
+		pushd "$install_dir/build"
 			# Build the sources
 			ynh_use_go
-			export GOPATH="$final_path/build/go"
-			export GOCACHE="$final_path/build/.cache"
+			export GOPATH="$install_dir/build/go"
+			export GOCACHE="$install_dir/build/.cache"
 			ynh_use_nodejs
 			make dist
 			mv listmonk ..
 		popd
 		ynh_remove_go
 		ynh_remove_nodejs
-		ynh_secure_remove --file="$final_path/build"
+		ynh_secure_remove --file="$install_dir/build"
 	else
-		ynh_setup_source --dest_dir="$final_path"  --source_id=$YNH_ARCH --keep="$final_path/config.toml"
+		ynh_setup_source --dest_dir="$install_dir" --keep="$install_dir/config.toml"
 	fi
 fi
 
-chmod 750 "$final_path"
-chmod -R o-rwx "$final_path"
-chown -R $app:www-data "$final_path"
-chmod +x "$final_path/listmonk"
+chmod -R o-rwx "$install_dir"
+chown -R $app:www-data "$install_dir"
+chmod +x "$install_dir/listmonk"
 
 #=================================================
 # NGINX CONFIGURATION
@@ -156,29 +70,12 @@ ynh_script_progression --message="Upgrading NGINX web server configuration..." -
 # Create a dedicated NGINX config
 ynh_add_nginx_config
 
-#=================================================
-# UPGRADE DEPENDENCIES
-#=================================================
-ynh_script_progression --message="Upgrading dependencies..." --weight=10
-
-ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies
-
-#=================================================
-# UPDATE A CONFIG FILE
-#=================================================
-# ynh_script_progression --message="Updating a configuration file..." --time --weight=1
-
-# ynh_add_config --template="../conf/config.toml" --destination="$final_path/config.toml"
-
-# chmod 400 "$final_path/config.toml"
-# chown $app:$app "$final_path/config.toml"
-
 #=================================================
 # DATABASE CONFIGURATION
 #=================================================
 ynh_script_progression --message="Generating database..." --weight=1
 
-pushd "$final_path"
+pushd "$install_dir"
 	yes | ./listmonk --upgrade
 popd
 
@@ -204,13 +101,6 @@ ynh_script_progression --message="Starting a systemd service..." --weight=3
 
 ynh_systemd_action --service_name=$app --action="start" --log_path="systemd"
 
-#=================================================
-# RELOAD NGINX
-#=================================================
-ynh_script_progression --message="Reloading NGINX web server..." --weight=1
-
-ynh_systemd_action --service_name=nginx --action=reload
-
 #=================================================
 # END OF SCRIPT
 #=================================================
diff --git a/scripts/ynh_install_go b/scripts/ynh_install_go
index 4fbf4e9..d9e3555 100644
--- a/scripts/ynh_install_go
+++ b/scripts/ynh_install_go
@@ -1,5 +1,3 @@
-#!/bin/bash
-
 ynh_go_try_bash_extension() {
   if [ -x src/configure ]; then
     src/configure && make -C src || {
@@ -244,4 +242,4 @@ ynh_cleanup_go () {
         ynh_secure_remove --file="$goenv_install_dir"
         ynh_secure_remove --file="/etc/profile.d/goenv.sh"
     fi
-}
+}
\ No newline at end of file
diff --git a/tests.toml b/tests.toml
new file mode 100644
index 0000000..a26dece
--- /dev/null
+++ b/tests.toml
@@ -0,0 +1,9 @@
+test_format = 1.0
+
+[default]
+
+    # -------------------------------
+    # Commits to test upgrade from
+    # -------------------------------
+
+    test_upgrade_from.4b1297d8.name = "Upgrade from  2.3.0"