diff --git a/.gitignore b/.gitignore
index 3462408..77cd13a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,3 +9,6 @@ secret.txt
 /local_test/
 /coverage.xml
 /htmlcov/
+*~
+*.sw[op]
+.DS_Store
diff --git a/manifest.toml b/manifest.toml
index abdf323..09a9fa7 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -15,7 +15,8 @@ license = "GPL-3.0"
 code = "https://github.com/jedie/django-fritzconnection"
 
 [integration]
-yunohost = ">= 11.2.12"
+yunohost = ">= 11.2.18"
+helpers_version = "2.1"
 architectures = "all"
 multi_instance = true
 ldap = true
@@ -43,6 +44,7 @@ ram.runtime = "100M"
     [resources.system_user]
 
     [resources.install_dir]
+    group = "www-data:r-x"
 
     [resources.permissions]
     main.url = "/"
diff --git a/scripts/_common.sh b/scripts/_common.sh
index be79c29..1b31a03 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -1,36 +1,23 @@
 #!/bin/bash
 
 #=================================================
-# COMMON VARIABLES
+# COMMON VARIABLES AND CUSTOM HELPERS
 #=================================================
 
 log_path=/var/log/$app
 log_file="${log_path}/${app}.log"
 
-
-#=================================================
-# PERSONAL HELPERS
-#=================================================
-
 _venv_install() {
-    ynh_exec_as "$app" python3 -m venv --upgrade "$install_dir/venv"
+    ynh_exec_as_app python3 -m venv --upgrade "$install_dir/venv"
     venvpy="$install_dir/venv/bin/python3"
 
-    ynh_exec_as "$app" "$venvpy" -m pip install --upgrade --no-cache-dir pip
+    ynh_exec_as_app "$venvpy" -m pip install --upgrade --no-cache-dir pip
 
-    ynh_exec_as "$app" "$venvpy" -m pip install setuptools wheel pyyaml
+    ynh_exec_as_app "$venvpy" -m pip install setuptools wheel pyyaml
 }
 
 _build_app() {
-    ynh_exec_as "$app" "$venvpy" -m ensurepip
-    ynh_exec_as "$app" "$venvpy" -m pip install --upgrade wheel pip setuptools
-    ynh_exec_as "$app" "$venvpy" -m pip install --no-deps -r "$install_dir/app/requirements.txt"
+    ynh_exec_as_app "$venvpy" -m ensurepip
+    ynh_exec_as_app "$venvpy" -m pip install --upgrade wheel pip setuptools
+    ynh_exec_as_app "$venvpy" -m pip install --no-deps -r "$install_dir/app/requirements.txt"
 }
-
-#=================================================
-# EXPERIMENTAL HELPERS
-#=================================================
-
-#=================================================
-# FUTURE OFFICIAL HELPERS
-#=================================================
diff --git a/scripts/backup b/scripts/backup
index 0f5c35b..0441dc3 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -7,44 +7,41 @@
 source ../settings/scripts/_common.sh
 source /usr/share/yunohost/helpers
 
-#=================================================
-# DECLARE DATA AND CONF FILES TO BACKUP
-#=================================================
-ynh_print_info --message="Declaring files to be backed up..."
+ynh_print_info "Declaring files to be backed up..."
 
 #=================================================
 # BACKUP THE APP MAIN DIR
 #=================================================
 
-ynh_backup --src_path="$install_dir"
+ynh_backup "$install_dir"
 
 #=================================================
 # SYSTEM CONFIGURATION
 #=================================================
 
 # Backup the nginx configuration
-ynh_backup --src_path="/etc/nginx/conf.d/$domain.d/$app.conf"
+ynh_backup "/etc/nginx/conf.d/$domain.d/$app.conf"
 
 # Backup the systemd service unit
-ynh_backup --src_path="/etc/systemd/system/$app.service"
+ynh_backup "/etc/systemd/system/$app.service"
 
 # Backup the logrotate configuration
-ynh_backup --src_path="/etc/logrotate.d/$app"
+ynh_backup "/etc/logrotate.d/$app"
 
 #=================================================
 # BACKUP VARIOUS FILES
 #=================================================
 
-ynh_backup --src_path="/var/log/$app/"
+ynh_backup "/var/log/$app/"
 
 #=================================================
 # BACKUP THE PostgreSQL DATABASE
 #=================================================
 
-ynh_psql_dump_db --database="$db_name" > db.sql
+ynh_psql_dump_db > db.sql
 
 #=================================================
 # END OF SCRIPT
 #=================================================
 
-ynh_print_info --message="Backup script completed for $app. (YunoHost will then actually copy those files to the archive)."
+ynh_print_info "Backup script completed for $app. (YunoHost will then actually copy those files to the archive)."
diff --git a/scripts/change_url b/scripts/change_url
index 8f0b805..0304014 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -10,33 +10,33 @@ source /usr/share/yunohost/helpers
 #=================================================
 # STOP SYSTEMD SERVICE
 #=================================================
-ynh_script_progression --message="Stopping systemd service '$app'..."
+ynh_script_progression "Stopping systemd service '$app'..."
 
-ynh_systemd_action --service_name="$app" --action="stop"
+ynh_systemctl --service="$app" --action="stop"
 
 #=================================================
 # MODIFY URL IN NGINX CONF
 #=================================================
-ynh_script_progression --message="Updating NGINX web server configuration..." --weight=1
+ynh_script_progression "Updating NGINX web server configuration..."
 
-ynh_change_url_nginx_config
+ynh_config_change_url_nginx
 
 #=================================================
 # SPECIFIC MODIFICATIONS
 #=================================================
-ynh_script_progression --message="Modify $app config file..."
+ynh_script_progression "Modify $app config file..."
 
-ynh_add_config --template="settings.py" --destination="$install_dir/app/settings.py"
+ynh_config_add --template="settings.py" --destination="$install_dir/app/settings.py"
 
 #=================================================
 # START SYSTEMD SERVICE
 #=================================================
-ynh_script_progression --message="Starting $app's systemd service..." --weight=1
+ynh_script_progression "Starting $app's systemd service..."
 
-ynh_systemd_action --service_name="$app" --action="start" --log_path="/var/log/$app/$app.log"
+ynh_systemctl --service="$app" --action="start"
 
 #=================================================
 # END OF SCRIPT
 #=================================================
 
-ynh_script_progression --message="Change of URL completed for $app" --last
+ynh_script_progression "Change of URL completed for $app"
diff --git a/scripts/install b/scripts/install
index 76a1430..7cd0472 100755
--- a/scripts/install
+++ b/scripts/install
@@ -12,52 +12,51 @@ source /usr/share/yunohost/helpers
 #=================================================
 
 admin_email="$(ynh_user_get_info "$admin" mail)"
-ynh_app_setting_set --app="$app" --key=admin_email --value="$admin_email"
+ynh_app_setting_set --key=admin_email --value="$admin_email"
 
 redis_db=$(ynh_redis_get_free_db)
-ynh_app_setting_set --app="$app" --key=redis_db --value="$redis_db"
+ynh_app_setting_set --key=redis_db --value="$redis_db"
 
 #-------------------------------------------------
 # config_panel.toml settings:
 
 debug_enabled="0"
-ynh_app_setting_set --app="$app" --key=debug_enabled --value="$debug_enabled"
+ynh_app_setting_set --key=debug_enabled --value="$debug_enabled"
 log_level="WARNING"
-ynh_app_setting_set --app="$app" --key=log_level --value="$log_level"
+ynh_app_setting_set --key=log_level --value="$log_level"
 default_from_email="${app}@${domain}"
-ynh_app_setting_set --app="$app" --key=default_from_email --value="$default_from_email"
+ynh_app_setting_set --key=default_from_email --value="$default_from_email"
 
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
-ynh_script_progression --message="Setting up source files..." --weight=1
+ynh_script_progression "Setting up source files..."
 
 mkdir -p "$install_dir/"{app,public/media,public/static}
 
-ynh_add_config --template="requirements.txt" --destination="$install_dir/app/requirements.txt"
+ynh_config_add --template="requirements.txt" --destination="$install_dir/app/requirements.txt"
 
-ynh_add_config --template="gunicorn.conf.py" --destination="$install_dir/app/gunicorn.conf.py"
+ynh_config_add --template="gunicorn.conf.py" --destination="$install_dir/app/gunicorn.conf.py"
 
-ynh_add_config --template="manage.py" --destination="$install_dir/app/manage.py"
+ynh_config_add --template="manage.py" --destination="$install_dir/app/manage.py"
 chmod +x "$install_dir/app/manage.py"
 
-ynh_add_config --template="settings.py" --destination="$install_dir/app/settings.py"
-ynh_add_config --template="setup_user.py" --destination="$install_dir/app/setup_user.py"
-ynh_add_config --template="urls.py" --destination="$install_dir/app/urls.py"
-ynh_add_config --template="wsgi.py" --destination="$install_dir/app/wsgi.py"
+ynh_config_add --template="settings.py" --destination="$install_dir/app/settings.py"
+ynh_config_add --template="setup_user.py" --destination="$install_dir/app/setup_user.py"
+ynh_config_add --template="urls.py" --destination="$install_dir/app/urls.py"
+ynh_config_add --template="wsgi.py" --destination="$install_dir/app/wsgi.py"
 
 touch "$install_dir/app/local_settings.py"
 
-chown -R "$app:www-data" "$install_dir"
-
+#REMOVEME? Assuming the install dir is setup using ynh_setup_source, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chown -R "$app:www-data" "$install_dir"
 mkdir -p "/var/log/$app"
 touch "/var/log/$app/$app.log"
-chown -R "$app:$app" "/var/log/$app"
+#REMOVEME? Assuming ynh_config_add_logrotate is called, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chown -R "$app:$app" "/var/log/$app"
 
 #=================================================
 # PYTHON VIRTUALENV
 #=================================================
-ynh_script_progression --message="Installing $app..." --weight=10
+ynh_script_progression "Installing $app..."
 
 _venv_install
 
@@ -65,44 +64,44 @@ _build_app
 
 pushd "$install_dir/app"
     # Just for debugging:
-    ynh_exec_as "$app" "$venvpy" ./manage.py diffsettings
+    ynh_exec_as_app "$venvpy" ./manage.py diffsettings
 
-    ynh_exec_as "$app" "$venvpy" ./manage.py migrate --no-input
-    ynh_exec_as "$app" "$venvpy" ./manage.py collectstatic --no-input
+    ynh_exec_as_app "$venvpy" ./manage.py migrate --no-input
+    ynh_exec_as_app "$venvpy" ./manage.py collectstatic --no-input
 
     # Create/update Django superuser (set unusable password, because auth done via SSOwat):
-    ynh_exec_as "$app" "$venvpy" ./manage.py create_superuser --username="$admin" --email="$(ynh_user_get_info "$admin" mail)"
+    ynh_exec_as_app "$venvpy" ./manage.py create_superuser --username="$admin" --email="$(ynh_user_get_info "$admin" mail)"
 
     # Check the configuration
     # This may fail in some cases with errors, etc., but the app works and the user can fix issues later.
-    ynh_exec_as "$app" "$venvpy" ./manage.py check --deploy || true
+    ynh_exec_as_app "$venvpy" ./manage.py check --deploy || true
 popd
 
 #=================================================
 # SYSTEM CONFIGURATION
 #=================================================
-ynh_script_progression --message="Adding system configurations related to $app..." --weight=1
+ynh_script_progression "Adding system configurations related to $app..."
 
 # Create a dedicated NGINX config using the conf/nginx.conf template
-ynh_add_nginx_config
+ynh_config_add_nginx
 
 # Create a dedicated systemd config
-ynh_add_systemd_config
+ynh_config_add_systemd
 yunohost service add "$app" --description="Django-fritzconnection server" --log="/var/log/$app/$app.log"
 
 # Use logrotate to manage app-specific logfile(s)
-ynh_use_logrotate "$log_file"
+ynh_config_add_logrotate "$log_file"
 
 #=================================================
 # START SYSTEMD SERVICE
 #=================================================
-ynh_script_progression --message="Starting $app's systemd service..." --weight=1
+ynh_script_progression "Starting $app's systemd service..."
 
 # Start a systemd service
-ynh_systemd_action --service_name="$app" --action="start" --log_path="/var/log/$app/$app.log"
+ynh_systemctl --service="$app" --action="start"
 
 #=================================================
 # END OF SCRIPT
 #=================================================
 
-ynh_script_progression --message="Installation of $app completed" --last
+ynh_script_progression "Installation of $app completed"
diff --git a/scripts/remove b/scripts/remove
index c69ff02..ef85c69 100755
--- a/scripts/remove
+++ b/scripts/remove
@@ -10,20 +10,20 @@ source /usr/share/yunohost/helpers
 #=================================================
 # REMOVE SYSTEM CONFIGURATIONS
 #=================================================
-ynh_script_progression --message="Removing system configurations related to $app..." --weight=1
+ynh_script_progression "Removing system configurations related to $app..."
 
 # Remove the service from the list of services known by YunoHost (added from `yunohost service add`)
-if ynh_exec_warn_less yunohost service status "$app" >/dev/null; then
+if ynh_hide_warnings yunohost service status "$app" >/dev/null; then
     yunohost service remove "$app"
 fi
 
-ynh_remove_systemd_config
+ynh_config_remove_systemd
 
-ynh_remove_nginx_config
+ynh_config_remove_nginx
 
-ynh_remove_logrotate
+ynh_config_remove_logrotate
 
 #=================================================
 # END OF SCRIPT
 #=================================================
-ynh_script_progression --message="Removal of $app completed" --last
+ynh_script_progression "Removal of $app completed"
diff --git a/scripts/restore b/scripts/restore
index cc1ebcc..d4ffa27 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -10,61 +10,60 @@ source /usr/share/yunohost/helpers
 #=================================================
 # RESTORE THE APP MAIN DIR
 #=================================================
-ynh_script_progression --message="Restoring the app main directory..."
+ynh_script_progression "Restoring the app main directory..."
 
-ynh_restore_file --origin_path="$install_dir"
-
-chmod -R o-rwx "$install_dir"
-chown -R "$app:www-data" "$install_dir"
+ynh_restore "$install_dir"
 
+#REMOVEME? Assuming the install dir is setup using ynh_setup_source, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chmod -R o-rwx "$install_dir"
+#REMOVEME? Assuming the install dir is setup using ynh_setup_source, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chown -R "$app:www-data" "$install_dir"
 #=================================================
 # RESTORE THE POSTGRESQL DATABASE
 #=================================================
-ynh_script_progression --message="Restoring the PostgreSQL database..." --weight=1
+ynh_script_progression "Restoring the PostgreSQL database..."
 
-ynh_psql_connect_as --user="$db_user" --password="$db_pwd" --database="$db_name" < ./db.sql
+ynh_psql_db_shell < ./db.sql
 
 #=================================================
 # PYTHON VIRTUALENV
 # Maybe the backup contains another Python version
 #=================================================
-ynh_script_progression --message="Updating Python virtualenv and rebuilding $app..." --weight=5
+ynh_script_progression "Updating Python virtualenv and rebuilding $app..."
 
 # Always recreate everything fresh with current python version
-ynh_secure_remove "$install_dir/venv"
+ynh_safe_rm "$install_dir/venv"
 _venv_install
-chown -R "$app:www-data" "$install_dir"
+#REMOVEME? Assuming the install dir is setup using ynh_setup_source, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chown -R "$app:www-data" "$install_dir"
 _build_app
 
 #=================================================
 # RESTORE SYSTEM CONFIGURATIONS
 #=================================================
-ynh_script_progression --message="Restoring system configurations related to $app..." --weight=1
+ynh_script_progression "Restoring system configurations related to $app..."
 
-ynh_restore_file --origin_path="/etc/nginx/conf.d/$domain.d/$app.conf"
+ynh_restore "/etc/nginx/conf.d/$domain.d/$app.conf"
 
-ynh_restore_file --origin_path="/etc/systemd/system/$app.service"
+ynh_restore "/etc/systemd/system/$app.service"
 systemctl enable "$app.service" --quiet
 yunohost service add "$app" --description="Django-fritzconnection server" --log="/var/log/$app/$app.log"
 
-ynh_restore_file --origin_path="/etc/logrotate.d/$app"
+ynh_restore "/etc/logrotate.d/$app"
 
 #=================================================
 # RESTORE VARIOUS FILES
 #=================================================
 
-ynh_restore_file --origin_path="/var/log/$app/"
+ynh_restore "/var/log/$app/"
 
 #=================================================
 # RELOAD NGINX AND PHP-FPM OR THE APP SERVICE
 #=================================================
-ynh_script_progression --message="Reloading NGINX web server and $app's service..." --weight=1
+ynh_script_progression "Reloading NGINX web server and $app's service..."
 
-ynh_systemd_action --service_name="$app" --action="start" --log_path="/var/log/$app/$app.log"
+ynh_systemctl --service="$app" --action="start"
 
-ynh_systemd_action --service_name=nginx --action=reload
+ynh_systemctl --service=nginx --action=reload
 
 #=================================================
 # END OF SCRIPT
 #=================================================
-ynh_script_progression --message="Restoration completed for $app" --last
+ynh_script_progression "Restoration completed for $app"
diff --git a/scripts/upgrade b/scripts/upgrade
index babca94..bd2a969 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -10,37 +10,40 @@ source /usr/share/yunohost/helpers
 #=================================================
 # STOP SYSTEMD SERVICE
 #=================================================
-ynh_script_progression --message="Stopping $app's systemd service..." --weight=1
+ynh_script_progression "Stopping $app's systemd service..."
 
-ynh_systemd_action --service_name="$app" --action="stop" --log_path="/var/log/$app/$app.log"
+ynh_systemctl --service="$app" --action="stop"
 
 #=================================================
 # ENSURE DOWNWARD COMPATIBILITY
 #=================================================
-ynh_script_progression --message="Ensuring downward compatibility..." --weight=1
+ynh_script_progression "Ensuring downward compatibility..."
 
+# FIXMEhelpers2.1: maybe replace with: ynh_app_setting_set_default --key=debug_enabled --value="0"
 if [ -z "${debug_enabled:-}" ]; then
     debug_enabled="0"
-    ynh_app_setting_set --app="$app" --key=debug_enabled --value="$debug_enabled"
+    ynh_app_setting_set --key=debug_enabled --value="$debug_enabled"
 fi
 
+# FIXMEhelpers2.1: maybe replace with: ynh_app_setting_set_default --key=log_level --value="WARNING"
 if [ -z "${log_level:-}" ]; then
     log_level="WARNING"
-    ynh_app_setting_set --app="$app" --key=log_level --value="$log_level"
+    ynh_app_setting_set --key=log_level --value="$log_level"
 fi
 
 if [ -z "${admin_email:-}" ]; then
     admin_email="${admin}@${domain}"
 fi
 
+# FIXMEhelpers2.1: maybe replace with: ynh_app_setting_set_default --key=default_from_email --value="${app}@${domain}"
 if [ -z "${default_from_email:-}" ]; then
     default_from_email="${app}@${domain}"
-    ynh_app_setting_set --app="$app" --key=default_from_email --value="$default_from_email"
+    ynh_app_setting_set --key=default_from_email --value="$default_from_email"
 fi
 
 if [ -d "/opt/yunohost/$app" ]; then
     if [ -d "$install_dir/app" ]; then
-        ynh_secure_remove --file="/opt/yunohost/$app"
+        ynh_safe_rm "/opt/yunohost/$app"
     else
         mv "/opt/yunohost/$app" "$install_dir/app"
     fi
@@ -49,34 +52,32 @@ fi
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
-ynh_script_progression --message="Upgrading source files..." --weight=1
+ynh_script_progression "Upgrading source files..."
 
 mkdir -p "$install_dir/"{app,public/media,public/static}
 
-ynh_add_config --template="requirements.txt" --destination="$install_dir/app/requirements.txt"
+ynh_config_add --template="requirements.txt" --destination="$install_dir/app/requirements.txt"
 
-ynh_add_config --template="gunicorn.conf.py" --destination="$install_dir/app/gunicorn.conf.py"
+ynh_config_add --template="gunicorn.conf.py" --destination="$install_dir/app/gunicorn.conf.py"
 
-ynh_add_config --template="manage.py" --destination="$install_dir/app/manage.py"
+ynh_config_add --template="manage.py" --destination="$install_dir/app/manage.py"
 chmod +x "$install_dir/app/manage.py"
 
-ynh_add_config --template="settings.py" --destination="$install_dir/app/settings.py"
-ynh_add_config --template="setup_user.py" --destination="$install_dir/app/setup_user.py"
-ynh_add_config --template="urls.py" --destination="$install_dir/app/urls.py"
-ynh_add_config --template="wsgi.py" --destination="$install_dir/app/wsgi.py"
-
-chown -R "$app:www-data" "$install_dir"
-
-chown -R "$app:www-data" "$install_dir"
+ynh_config_add --template="settings.py" --destination="$install_dir/app/settings.py"
+ynh_config_add --template="setup_user.py" --destination="$install_dir/app/setup_user.py"
+ynh_config_add --template="urls.py" --destination="$install_dir/app/urls.py"
+ynh_config_add --template="wsgi.py" --destination="$install_dir/app/wsgi.py"
 
+#REMOVEME? Assuming the install dir is setup using ynh_setup_source, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chown -R "$app:www-data" "$install_dir"
+#REMOVEME? Assuming the install dir is setup using ynh_setup_source, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chown -R "$app:www-data" "$install_dir"
 mkdir -p "/var/log/$app"
 touch "/var/log/$app/$app.log"
-chown -R "$app:$app" "/var/log/$app"
+#REMOVEME? Assuming ynh_config_add_logrotate is called, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chown -R "$app:$app" "/var/log/$app"
 
 #=================================================
 # PYTHON VIRTUALENV
 #=================================================
-ynh_script_progression --message="Upgrading $app..." --weight=10
+ynh_script_progression "Upgrading $app..."
 
 _venv_install
 
@@ -84,40 +85,40 @@ _build_app
 
 pushd "$install_dir/app"
     # Just for debugging:
-    ynh_exec_as "$app" "$venvpy" ./manage.py diffsettings
+    ynh_exec_as_app "$venvpy" ./manage.py diffsettings
 
-    ynh_exec_as "$app" "$venvpy" ./manage.py migrate --no-input
-    ynh_exec_as "$app" "$venvpy" ./manage.py collectstatic --no-input
+    ynh_exec_as_app "$venvpy" ./manage.py migrate --no-input
+    ynh_exec_as_app "$venvpy" ./manage.py collectstatic --no-input
 
     # Create/update Django superuser (set unusable password, because auth done via SSOwat):
-    ynh_exec_as "$app" "$venvpy" ./manage.py create_superuser --username="$admin" --email="$(ynh_user_get_info "$admin" mail)"
+    ynh_exec_as_app "$venvpy" ./manage.py create_superuser --username="$admin" --email="$(ynh_user_get_info "$admin" mail)"
 
     # Check the configuration
     # This may fail in some cases with errors, etc., but the app works and the user can fix issues later.
-    ynh_exec_as "$app" "$venvpy" ./manage.py check --deploy || true
+    ynh_exec_as_app "$venvpy" ./manage.py check --deploy || true
 popd
 
 #=================================================
 # REAPPLY SYSTEM CONFIGURATIONS
 #=================================================
-ynh_script_progression --message="Upgrading system configurations related to $app..." --weight=1
+ynh_script_progression "Upgrading system configurations related to $app..."
 
-ynh_add_nginx_config
+ynh_config_add_nginx
 
-ynh_add_systemd_config
+ynh_config_add_systemd
 yunohost service add "$app" --description="Django-fritzconnection server" --log="/var/log/$app/$app.log"
 
-ynh_use_logrotate --non-append
+ynh_config_add_logrotate
 
 #=================================================
 # START SYSTEMD SERVICE
 #=================================================
-ynh_script_progression --message="Starting $app's systemd service..." --weight=1
+ynh_script_progression "Starting $app's systemd service..."
 
-ynh_systemd_action --service_name="$app" --action="start" --log_path="/var/log/$app/$app.log"
+ynh_systemctl --service="$app" --action="start"
 
 #=================================================
 # END OF SCRIPT
 #=================================================
 
-ynh_script_progression --message="Upgrade of $app completed" --last
+ynh_script_progression "Upgrade of $app completed"