diff --git a/conf/extra_php-fpm.conf b/conf/extra_php-fpm.conf
deleted file mode 100644
index 14c8d27..0000000
--- a/conf/extra_php-fpm.conf
+++ /dev/null
@@ -1,4 +0,0 @@
-; Additional php.ini defines, specific to this pool of workers.
-
-php_admin_value[upload_max_filesize] = 50M
-php_admin_value[post_max_size] = 50M
\ No newline at end of file
diff --git a/conf/nginx.conf b/conf/nginx.conf
index a0f22b8..34d2c98 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -16,7 +16,7 @@ location __PATH__/ {
   try_files $uri $uri/ index.php;
   location ~ '[^/]\.php$|^/update.php' {
     fastcgi_split_path_info ^(.+?\.php)(/.*)$;
-    fastcgi_pass unix:/var/run/php/php__PHPVERSION__-fpm-__NAME__.sock;
+    fastcgi_pass unix:/var/run/php/php__PHP_VERSION__-fpm-__APP__.sock;
 
     fastcgi_index index.php;
     include fastcgi_params;
diff --git a/config_panel.toml b/config_panel.toml
deleted file mode 100644
index bf6428c..0000000
--- a/config_panel.toml
+++ /dev/null
@@ -1,31 +0,0 @@
-version = "1.0"
-
-[main]
-name = "Firefly-iii Data Importer configuration"
-
-    [main.php_fpm_config]
-    name = "PHP-FPM configuration"
-
-        [main.php_fpm_config.fpm_footprint]
-        ask = "Memory footprint"
-        type = "select"
-        choices.low = "Low, <= 20Mb per pool"
-        choices.medium = "Medium, between 20Mb and 40Mb per pool"
-        choices.high = "High, > 40Mb per pool"
-        choices.specific = "Use specific value"
-        default = "low"
-
-        [main.php_fpm_config.fpm_free_footprint]
-        visible = "fpm_footprint == 'specific'"
-        ask = "Memory footprint of the service?"
-        type = "number"
-        default = "0"
-        help = "Free field to specify exactly the footprint in Mb if you don't want to use one of the three previous values."
-
-        [main.php_fpm_config.fpm_usage]
-        ask = "Expected usage"
-        type = "select"
-        choices = ["low", "medium", "high"]
-        default = "low"
-        help = "low: Personal usage, behind the SSO. No RAM footprint when not used, but the impact on the processor can be high if many users are using the service.<br>medium: Low usage, few people or/and publicly accessible. Low RAM footprint, medium processor footprint when used.<br>high: High usage, frequently visited website. High RAM footprint, but lower on processor usage and quickly responding."
-
diff --git a/manifest.toml b/manifest.toml
index 8c224a8..9fa0a36 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -16,7 +16,8 @@ admindoc = "https://docs.firefly-iii.org/data-importer/how-to-use/"
 code = "https://github.com/firefly-iii/data-importer"
 
 [integration]
-yunohost = ">= 11.1.15"
+yunohost = ">= 11.2.18"
+helpers_version = "2.1"
 architectures = "all"
 multi_instance = true
 ldap = false
@@ -49,6 +50,7 @@ ram.runtime = "50M"
     [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 1a7049a..e922baa 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -1,20 +1,8 @@
 #!/bin/bash
 
 #=================================================
-# COMMON VARIABLES
+# COMMON VARIABLES AND CUSTOM HELPERS
 #=================================================
 
 # Composer version
-YNH_COMPOSER_VERSION="2.5.4"
-
-#=================================================
-# PERSONAL HELPERS
-#=================================================
-
-#=================================================
-# EXPERIMENTAL HELPERS
-#=================================================
-
-#=================================================
-# FUTURE OFFICIAL HELPERS
-#=================================================
+composer_version="2.5.4"
diff --git a/scripts/backup b/scripts/backup
index db124c0..7ba4012 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -1,46 +1,37 @@
 #!/bin/bash
 
-#=================================================
-# GENERIC START
-#=================================================
-# IMPORT GENERIC HELPERS
-#=================================================
-
 # Keep this path for calling _common.sh inside the execution's context of backup and restore scripts
 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"
 
 #=================================================
 # 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 PHP-FPM CONFIGURATION
 #=================================================
 
-ynh_backup --src_path="/etc/php/$phpversion/fpm/pool.d/$app.conf"
+ynh_backup "/etc/php/$php_version/fpm/pool.d/$app.conf"
 
 #=================================================
 # BACKUP VARIOUS FILES
 #=================================================
 
-# ynh_backup --src_path="/etc/cron.d/$app"
+# ynh_backup "/etc/cron.d/$app"
 
 #=================================================
 # 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 1fbf84a..1925b1f 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -1,11 +1,5 @@
 #!/bin/bash
 
-#=================================================
-# GENERIC STARTING
-#=================================================
-# IMPORT GENERIC HELPERS
-#=================================================
-
 source _common.sh
 source /usr/share/yunohost/helpers
 
@@ -16,29 +10,27 @@ source /usr/share/yunohost/helpers
 email=$(ynh_user_get_info --username=$admin --key=mail)
 timezone="$(cat /etc/timezone)"
 
-#=================================================
-# STANDARD MODIFICATIONS
 #=================================================
 # MODIFY URL IN NGINX CONF
 #=================================================
-ynh_script_progression --message="Updating NGINX web server configuration..."
+ynh_script_progression "Updating NGINX web server configuration..."
 
-ynh_change_url_nginx_config
+ynh_config_change_url_nginx
 
 #=================================================
 # MODIFY A CONFIG FILE
 #=================================================
-ynh_script_progression --message="Modifying a config file..."
+ynh_script_progression "Updating configuration..."
 
 domain="$new_domain"
 path="$new_path"
 
-ynh_add_config --template="../conf/.env" --destination="$install_dir/.env"
-chmod 400 "$install_dir/.env"
-chown $app "$install_dir/.env"
+ynh_config_add --template=".env" --destination="$install_dir/.env"
+#REMOVEME? Assuming the file is setup using ynh_config_add, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chmod 400 "$install_dir/.env"
+#REMOVEME? Assuming the file is setup using ynh_config_add, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chown $app "$install_dir/.env"
 
 #=================================================
 # END OF SCRIPT
 #=================================================
 
-ynh_script_progression --message="Change of URL completed for $app"
+ynh_script_progression "Change of URL completed for $app"
diff --git a/scripts/config b/scripts/config
deleted file mode 100644
index 91c2de7..0000000
--- a/scripts/config
+++ /dev/null
@@ -1,95 +0,0 @@
-#!/bin/bash
-
-#=================================================
-# GENERIC STARTING
-#=================================================
-# IMPORT GENERIC HELPERS
-#=================================================
-
-source _common.sh
-source /usr/share/yunohost/helpers
-
-ynh_abort_if_errors
-
-#=================================================
-# RETRIEVE ARGUMENTS
-#=================================================
-
-phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)
-current_fpm_footprint=$(ynh_app_setting_get --app=$app --key=fpm_footprint)
-
-#=================================================
-# SPECIFIC GETTERS FOR TOML SHORT KEY
-#=================================================
-
-get__fpm_footprint() {
-    # Free footprint value for php-fpm
-    # Check if current_fpm_footprint is an integer
-    if [ "$current_fpm_footprint" -eq "$current_fpm_footprint" ] 2> /dev/null
-    then
-        echo "specific"
-    else
-        echo "$current_fpm_footprint"
-    fi
-}
-
-get__free_footprint() {
-    # Free footprint value for php-fpm
-    # Check if current_fpm_footprint is an integer
-    if [ "$current_fpm_footprint" -eq "$current_fpm_footprint" ] 2> /dev/null
-    then
-        # If current_fpm_footprint is an integer, that's a numeric value for the footprint
-        echo "$current_fpm_footprint"
-    else
-        echo "0"
-    fi
-}
-
-#=================================================
-# SPECIFIC SETTERS FOR TOML SHORT KEYS
-#=================================================
-
-set__fpm_footprint() {
-    if [ "$fpm_footprint" != "specific" ]
-    then
-        ynh_app_setting_set --app=$app --key=fpm_footprint --value="$fpm_footprint"
-    fi
-}
-
-set__fpm_free_footprint() {
-    if [ "$fpm_footprint" = "specific" ]
-    then
-        ynh_app_setting_set --app=$app --key=fpm_footprint --value="$fpm_free_footprint"
-    fi
-}
-
-#=================================================
-# GENERIC FINALIZATION
-#=================================================
-
-ynh_app_config_validate() {
-    _ynh_app_config_validate
-
-    if [ "${changed[fpm_usage]}" == "true" ] || [ "${changed[fpm_footprint]}" == "true" ] || [ "${changed[fpm_free_footprint]}" == "true" ]; then
-        # If fpm_footprint is set to 'specific', use $fpm_free_footprint value.
-        if [ "$fpm_footprint" = "specific" ]
-        then
-            fpm_footprint=$fpm_free_footprint
-        fi
-
-        if [ "$fpm_footprint" == "0" ]
-        then
-            ynh_print_err --message="When selecting 'specific', you have to set a footprint value into the field below."
-
-            exit 0
-        fi
-    fi
-}
-
-ynh_app_config_apply() {
-    _ynh_app_config_apply
-
-    ynh_add_fpm_config --phpversion=$phpversion --usage=$fpm_usage --footprint=$fpm_footprint
-}
-
-ynh_app_config_run $1
diff --git a/scripts/install b/scripts/install
index 0444f81..9d260bd 100755
--- a/scripts/install
+++ b/scripts/install
@@ -1,11 +1,5 @@
 #!/bin/bash
 
-#=================================================
-# GENERIC START
-#=================================================
-# IMPORT GENERIC HELPERS
-#=================================================
-
 source _common.sh
 source /usr/share/yunohost/helpers
 
@@ -17,68 +11,69 @@ random_key=$(ynh_string_random --length=32)
 email=$(ynh_user_get_info --username=$admin --key=mail)
 timezone="$(cat /etc/timezone)"
 
-fpm_footprint="low"
-fpm_free_footprint=0
-fpm_usage="low"
+#REMOVEME? Everything about fpm_footprint is removed in helpers2.1... | fpm_footprint="low"
+#REMOVEME? Everything about fpm_free_footprint is removed in helpers2.1... | fpm_free_footprint=0
+#REMOVEME? Everything about fpm_usage is removed in helpers2.1... | fpm_usage="low"
 
 #=================================================
 # STORE SETTINGS FROM MANIFEST
 #=================================================
 
-ynh_app_setting_set --app=$app --key=random_key --value=$random_key
-ynh_app_setting_set --app=$app --key=fpm_footprint --value=$fpm_footprint
-ynh_app_setting_set --app=$app --key=fpm_free_footprint --value=$fpm_free_footprint
-ynh_app_setting_set --app=$app --key=fpm_usage --value=$fpm_usage
+ynh_app_setting_set --key=random_key --value=$random_key
+#REMOVEME? Everything about fpm_footprint is removed in helpers2.1... | ynh_app_setting_set --key=fpm_footprint --value=$fpm_footprint
+#REMOVEME? Everything about fpm_free_footprint is removed in helpers2.1... | ynh_app_setting_set --key=fpm_free_footprint --value=$fpm_free_footprint
+#REMOVEME? Everything about fpm_usage is removed in helpers2.1... | ynh_app_setting_set --key=fpm_usage --value=$fpm_usage
 
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
-ynh_script_progression --message="Setting up source files..."
+ynh_script_progression "Setting up source files..."
 
 # Download, check integrity, uncompress and patch the source from app.src
 ynh_setup_source --dest_dir=$install_dir
 
-chmod -R o-rwx "$install_dir"
-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 | 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"
 chmod -R 775 $install_dir/storage
 
 #=================================================
 # PHP-FPM CONFIGURATION
 #=================================================
-ynh_script_progression --message="Configuring PHP-FPM..."
+ynh_script_progression "Configuring PHP-FPM..."
 
 # Create a dedicated PHP-FPM config
-ynh_add_fpm_config --usage=$fpm_usage --footprint=$fpm_footprint
+ynh_config_add_phpfpm
 
 #=================================================
 # NGINX CONFIGURATION
 #=================================================
-ynh_script_progression --message="Configuring NGINX web server..."
+ynh_script_progression "Configuring NGINX web server..."
 
 # Create a dedicated NGINX config
-ynh_add_nginx_config
+ynh_config_add_nginx
 
 #=================================================
 # SPECIFIC SETUP
 #=================================================
 # INSTALL COMPOSER DEPENDENCIES
 #=================================================
-ynh_script_progression --message="Installing composer dependencies..."
+ynh_script_progression "Installing composer dependencies..."
 
-ynh_exec_warn_less ynh_install_composer --phpversion="$phpversion" --workdir="$install_dir"
+ynh_composer_install
+ynh_composer_exec install --no-dev
 
 #=================================================
 # ADD A CONFIGURATION
 #=================================================
-ynh_script_progression --message="Adding a configuration file..."
+ynh_script_progression "Adding $app's configuration..."
 
-ynh_add_config --template="../conf/.env" --destination="$install_dir/.env"
+ynh_config_add --template=".env" --destination="$install_dir/.env"
 
-chmod 400 "$install_dir/.env"
-chown $app "$install_dir/.env"
+#REMOVEME? Assuming the file is setup using ynh_config_add, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chmod 400 "$install_dir/.env"
+#REMOVEME? Assuming the file is setup using ynh_config_add, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chown $app "$install_dir/.env"
 
 #=================================================
 # END OF SCRIPT
 #=================================================
 
-ynh_script_progression --message="Installation of $app completed"
+ynh_script_progression "Installation of $app completed"
diff --git a/scripts/remove b/scripts/remove
index c9f5356..df26f5a 100755
--- a/scripts/remove
+++ b/scripts/remove
@@ -1,32 +1,26 @@
 #!/bin/bash
 
-#=================================================
-# GENERIC START
-#=================================================
-# IMPORT GENERIC HELPERS
-#=================================================
-
 source _common.sh
 source /usr/share/yunohost/helpers
 
 #=================================================
 # REMOVE NGINX CONFIGURATION
 #=================================================
-ynh_script_progression --message="Removing NGINX web server configuration..."
+ynh_script_progression "Removing NGINX web server configuration..."
 
 # Remove the dedicated NGINX config
-ynh_remove_nginx_config
+ynh_config_remove_nginx
 
 #=================================================
 # REMOVE PHP-FPM CONFIGURATION
 #=================================================
-ynh_script_progression --message="Removing PHP-FPM configuration..."
+ynh_script_progression "Removing PHP-FPM configuration..."
 
 # Remove the dedicated PHP-FPM config
-ynh_remove_fpm_config
+ynh_config_remove_phpfpm
 
 #=================================================
 # END OF SCRIPT
 #=================================================
 
-ynh_script_progression --message="Removal of $app completed"
+ynh_script_progression "Removal of $app completed"
diff --git a/scripts/restore b/scripts/restore
index afa45cb..d7ccdab 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -1,11 +1,5 @@
 #!/bin/bash
 
-#=================================================
-# GENERIC START
-#=================================================
-# IMPORT GENERIC HELPERS
-#=================================================
-
 # Keep this path for calling _common.sh inside the execution's context of backup and restore scripts
 source ../settings/scripts/_common.sh
 source /usr/share/yunohost/helpers
@@ -13,39 +7,36 @@ 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 PHP-FPM CONFIGURATION
 #=================================================
-ynh_script_progression --message="Restoring the PHP-FPM configuration..."
+ynh_script_progression "Restoring the PHP-FPM configuration..."
 
-ynh_restore_file --origin_path="/etc/php/$phpversion/fpm/pool.d/$app.conf"
+ynh_restore "/etc/php/$php_version/fpm/pool.d/$app.conf"
 
 #=================================================
 # RESTORE THE NGINX CONFIGURATION
 #=================================================
-ynh_script_progression --message="Restoring the NGINX web server configuration..."
+ynh_script_progression "Restoring the NGINX web server configuration..."
 
-ynh_restore_file --origin_path="/etc/nginx/conf.d/$domain.d/$app.conf"
+ynh_restore "/etc/nginx/conf.d/$domain.d/$app.conf"
 
-#=================================================
-# GENERIC FINALIZATION
 #=================================================
 # RELOAD NGINX AND PHP-FPM
 #=================================================
-ynh_script_progression --message="Reloading NGINX web server and PHP-FPM..."
+ynh_script_progression "Reloading NGINX web server and PHP-FPM..."
 
-ynh_systemd_action --service_name=php$phpversion-fpm --action=reload
-ynh_systemd_action --service_name=nginx --action=reload
+ynh_systemctl --service=php$php_version-fpm --action=reload
+ynh_systemctl --service=nginx --action=reload
 
 #=================================================
 # END OF SCRIPT
 #=================================================
 
-ynh_script_progression --message="Restoration completed for $app"
+ynh_script_progression "Restoration completed for $app"
diff --git a/scripts/upgrade b/scripts/upgrade
index 0e0721e..5ffac4b 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -1,11 +1,5 @@
 #!/bin/bash
 
-#=================================================
-# GENERIC START
-#=================================================
-# IMPORT GENERIC HELPERS
-#=================================================
-
 source _common.sh
 source /usr/share/yunohost/helpers
 
@@ -16,78 +10,72 @@ source /usr/share/yunohost/helpers
 email=$(ynh_user_get_info --username=$admin --key=mail)
 timezone="$(cat /etc/timezone)"
 
-#=================================================
-# CHECK VERSION
-#=================================================
-
-upgrade_type=$(ynh_check_app_version_changed)
-
 #=================================================
 # ENSURE DOWNWARD COMPATIBILITY
 #=================================================
-ynh_script_progression --message="Ensuring downward compatibility..."
+ynh_script_progression "Ensuring downward compatibility..."
 
 # If fpm_footprint doesn't exist, create it
 if [ -z "${fpm_footprint:-}" ]; then
     fpm_footprint=low
-    ynh_app_setting_set --app=$app --key=fpm_footprint --value=$fpm_footprint
+#REMOVEME? Everything about fpm_footprint is removed in helpers2.1... |     ynh_app_setting_set --key=fpm_footprint --value=$fpm_footprint
 fi
 
 # If fpm_free_footprint doesn't exist, create it
 if [ -z "${fpm_free_footprint:-}" ]; then
     fpm_free_footprint=0
-    ynh_app_setting_set --app=$app --key=fpm_free_footprint --value=$fpm_free_footprint
+#REMOVEME? Everything about fpm_free_footprint is removed in helpers2.1... |     ynh_app_setting_set --key=fpm_free_footprint --value=$fpm_free_footprint
 fi
 
 # If fpm_usage doesn't exist, create it
 if [ -z "${fpm_usage:-}" ]; then
     fpm_usage=low
-    ynh_app_setting_set --app=$app --key=fpm_usage --value=$fpm_usage
+#REMOVEME? Everything about fpm_usage is removed in helpers2.1... |     ynh_app_setting_set --key=fpm_usage --value=$fpm_usage
 fi
 
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
 
-if [ "$upgrade_type" == "UPGRADE_APP" ]
+# FIXME: this is still supported but the recommendation is now to *always* re-setup the app sources wether or not the upstream sources changed
+if ynh_app_upstream_version_changed
 then
-	ynh_script_progression --message="Upgrading source files..."
+	ynh_script_progression "Upgrading source files..."
 
 	# Download, check integrity, uncompress and patch the source from app.src
 	ynh_setup_source --dest_dir="$install_dir" --keep=".env storage/upload storage/export"
 fi
 
-chmod -R o-rwx "$install_dir"
-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 | 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"
 chmod -R 775 $install_dir/storage
 
 #=================================================
 # PHP-FPM CONFIGURATION
 #=================================================
-ynh_script_progression --message="Upgrading PHP-FPM configuration..."
+ynh_script_progression "Upgrading PHP-FPM configuration..."
 
 # Create a dedicated PHP-FPM config
-ynh_add_fpm_config --phpversion=$phpversion --usage=$fpm_usage --footprint=$fpm_footprint
+ynh_config_add_phpfpm
 
 #=================================================
 # NGINX CONFIGURATION
 #=================================================
-ynh_script_progression --message="Upgrading NGINX web server configuration..."
+ynh_script_progression "Upgrading NGINX web server configuration..."
 
 # Create a dedicated NGINX config
-ynh_add_nginx_config
+ynh_config_add_nginx
 
-#=================================================
-# SPECIFIC UPGRADE
 #=================================================
 # UPDATE PHP DEPENDENCIES
 #=================================================
-ynh_script_progression --message="Updating PHP dependencies..."
+ynh_script_progression "Updating PHP dependencies..."
 
-ynh_exec_warn_less ynh_install_composer
+ynh_composer_install
+ynh_composer_exec install --no-dev
 
 #=================================================
 # END OF SCRIPT
 #=================================================
 
-ynh_script_progression --message="Upgrade of $app completed"
+ynh_script_progression "Upgrade of $app completed"