diff --git a/README.md b/README.md
index 348fcf8..0d368ee 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # h5ai for YunoHost
 
 [![Integration level](https://dash.yunohost.org/integration/h5ai.svg)](https://dash.yunohost.org/appci/app/h5ai) ![](https://ci-apps.yunohost.org/ci/badges/h5ai.status.svg) ![](https://ci-apps.yunohost.org/ci/badges/h5ai.maintain.svg)  
-[![Install h5ai with YunoHost](https://install-app.yunohost.org/install-with-yunohost.png)](https://install-app.yunohost.org/?app=h5ai)
+[![Install h5ai with YunoHost](https://install-app.yunohost.org/install-with-yunohost.svg)](https://install-app.yunohost.org/?app=h5ai)
 
 *[Lire ce readme en français.](./README_fr.md)*
 
diff --git a/check_process b/check_process
index 5f4a9a1..8bb191c 100644
--- a/check_process
+++ b/check_process
@@ -18,9 +18,7 @@
 		multi_instance=0
 		incorrect_path=1
 		port_already_use=0
-		change_url=0
-;;; Levels
-	Level 5=auto
+		change_url=1
 ;;; Options
 Email=alex.aubin@mailoo.org
 Notification=down
diff --git a/conf/app.src b/conf/app.src
index 8b6d764..290b95b 100644
--- a/conf/app.src
+++ b/conf/app.src
@@ -3,4 +3,4 @@ SOURCE_SUM=612acd8cc724ab42c5266f7b9966a0212b561331d8770b5609891edb5cb69a8b
 SOURCE_SUM_PRG=sha256sum
 SOURCE_FORMAT=zip
 SOURCE_IN_SUBDIR=false
-SOURCE_FILENAME=h5ai-0.29.2.zip
\ No newline at end of file
+SOURCE_FILENAME=h5ai-0.29.2.zip
diff --git a/manifest.json b/manifest.json
index 7728111..411d33f 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1,12 +1,12 @@
 {
-    "name": "H5AI",
+    "name": "h5ai",
     "id": "h5ai",
     "packaging_format": 1,
     "description": {
-        "en": "A modern HTTP web server index for NGINX.",
-        "fr": "Un serveur moderne d'index pour NGINX."
+        "en": "Modern HTTP web server index for NGINX.",
+        "fr": "Serveur moderne d'index pour NGINX."
     },
-    "version": "0.29.2~ynh2",
+    "version": "0.29.2~ynh3",
     "url": "https://larsjung.de/h5ai/",
     "license": "MIT",
     "maintainer": {
@@ -14,7 +14,7 @@
         "email": "alex.aubin@mailoo.org"
     },
     "requirements": {
-        "yunohost": ">= 3.7.0"
+        "yunohost": ">= 3.8.1"
     },
     "multi_instance": false,
     "services": [
@@ -53,4 +53,4 @@
             }
         ]
     }
-}
\ No newline at end of file
+}
diff --git a/pull_request_template.md b/pull_request_template.md
new file mode 100644
index 0000000..9eefc77
--- /dev/null
+++ b/pull_request_template.md
@@ -0,0 +1,18 @@
+## Problem
+- *Description of why you made this PR*
+
+## Solution
+- *And how do you fix that problem*
+
+## PR Status
+- [ ] Code finished.
+- [ ] Tested with Package_check.
+- [ ] Fix or enhancement tested.
+- [ ] Upgrade from last version tested.
+- [ ] Can be reviewed and tested.
+
+## Package_check results
+---
+*If you have access to [App Continuous Integration for packagers](https://yunohost.org/#/packaging_apps_ci) you can provide a link to the package_check results like below, replacing '-NUM-' in this link by the PR number and USERNAME by your username on the ci-apps-dev. Or you provide a screenshot or a pastebin of the results*
+
+[![Build Status](https://ci-apps-dev.yunohost.org/jenkins/job/h5ai_ynh%20PR-NUM-%20(USERNAME)/badge/icon)](https://ci-apps-dev.yunohost.org/jenkins/job/h5ai_ynh%20PR-NUM-%20(USERNAME)/)  
diff --git a/scripts/change_url b/scripts/change_url
new file mode 100644
index 0000000..92e6311
--- /dev/null
+++ b/scripts/change_url
@@ -0,0 +1,106 @@
+#!/bin/bash
+
+#=================================================
+# GENERIC STARTING
+#=================================================
+# IMPORT GENERIC HELPERS
+#=================================================
+
+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=$app --key=final_path)
+
+#=================================================
+# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
+#=================================================
+ynh_script_progression --message="Backing up the app before changing its URL (may take a while)..." --weight=1
+
+# Backup the current version of the app
+ynh_backup_before_upgrade
+ynh_clean_setup () {
+	# Remove the new domain config file, the remove script won't do it as it doesn't know yet its location.
+	ynh_secure_remove --file="/etc/nginx/conf.d/$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" != "$new_path" ]
+then
+	change_path=1
+fi
+
+#=================================================
+# MODIFY URL IN NGINX CONF
+#=================================================
+ynh_script_progression --message="Updating NGINX web server configuration..." --weight=3
+
+nginx_conf_path=/etc/nginx/conf.d/$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
+
+#=================================================
+# GENERIC FINALISATION
+#=================================================
+# RELOAD NGINX
+#=================================================
+ynh_script_progression --message="Reloading NGINX web server..." --weight=1
+
+ynh_systemd_action --service_name=nginx --action=reload
+
+#=================================================
+# END OF SCRIPT
+#=================================================
+
+ynh_script_progression --message="Change of URL completed for $app" --last
diff --git a/scripts/install b/scripts/install
index d2d49b8..58be67e 100644
--- a/scripts/install
+++ b/scripts/install
@@ -25,19 +25,19 @@ is_public=$YNH_APP_ARG_IS_PUBLIC
 
 app=$YNH_APP_INSTANCE_NAME
 
-if [[ "$path_url" != "/" ]]
-then
-     # We use the path url name (e.g. /documents) instead of h5ai for convenience...
-     final_path=/var/www/$path_url
-else
-     final_path=/var/www/$app
-fi
-
 #=================================================
 # CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
 #=================================================
 ynh_script_progression --message="Validating installation parameters..." --weight=1
 
+if [[ "$path_url" != "/" ]]
+then
+     # We use the path url name (e.g. /documents) instead of h5ai for convenience...
+     final_path=/var/www$path_url
+else
+     final_path=/var/www/$app
+fi
+
 # Register (book) web path
 ynh_webpath_register --app=$app --domain=$domain --path_url=$path_url
 
@@ -60,15 +60,6 @@ ynh_script_progression --message="Setting up source files..." --weight=4
 # Download, check integrity, uncompress and patch the source from app.src
 ynh_setup_source "$final_path"
 
-#=================================================
-# GENERIC FINALIZATION
-#=================================================
-# SECURE FILES AND DIRECTORIES
-#=================================================
-
-# Restore permissions on app files
-chown -R www-data:www-data "$final_path"
-
 #=================================================
 # NGINX CONFIGURATION
 #=================================================
@@ -77,6 +68,23 @@ ynh_script_progression --message="Configuring NGINX web server..." --weight=1
 # Create a dedicated nginx config
 ynh_add_nginx_config
 
+#=================================================
+# CREATE DEDICATED USER
+#=================================================
+ynh_script_progression --message="Configuring system user..." --weight=1
+
+# Create a system user
+ynh_system_user_create --username=$app
+
+#=================================================
+# GENERIC FINALIZATION
+#=================================================
+# SECURE FILES AND DIRECTORIES
+#=================================================
+
+# Restore permissions on app files
+chown -R $app: "$final_path"
+
 #=================================================
 # SETUP SSOWAT
 #=================================================
diff --git a/scripts/remove b/scripts/remove
index de6c4b0..09f0850 100644
--- a/scripts/remove
+++ b/scripts/remove
@@ -26,6 +26,14 @@ ynh_script_progression --message="Removing $app main directory..." --weight=3
 # Remove sources
 ynh_secure_remove --file="$final_path"
 
+#=================================================
+# REMOVE DEDICATED USER
+#=================================================
+ynh_script_progression --message="Removing the dedicated system user..." --weight=1
+
+# Delete a system user
+ynh_system_user_delete --username=$app
+
 #=================================================
 # REMOVE THE NGINX CONFIGURATION
 #=================================================
diff --git a/scripts/restore b/scripts/restore
index 6371596..4a4e6cb 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -51,12 +51,20 @@ ynh_script_progression --message="Restoring the app main directory..." --weight=
 
 ynh_restore_file --origin_path="$final_path"
 
+#=================================================
+# 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
+
 #=================================================
 # RESTORE USER RIGHTS
 #=================================================
 
 # Restore permissions on app files
-chown -R www-data:www-data "$final_path"
+chown -R $app: "$final_path"
 
 #=================================================
 # GENERIC FINALIZATION
diff --git a/scripts/upgrade b/scripts/upgrade
index afb6b80..366ff9d 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -67,12 +67,6 @@ ynh_clean_setup () {
 # Exit if an error occurs during the execution of the script
 ynh_abort_if_errors
 
-#=================================================
-# CHECK THE PATH
-#=================================================
-
-path_url=$(ynh_normalize_url_path --path_url=$path_url)
-
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
@@ -90,9 +84,17 @@ fi
 #=================================================
 ynh_script_progression --message="Upgrading NGINX web server configuration..." --weight=1
 
-# Create a dedicated nginx config
+# Create a dedicated NGINX config
 ynh_add_nginx_config
 
+#=================================================
+# 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
+
 #=================================================
 # GENERIC FINALIZATION
 #=================================================
@@ -100,7 +102,7 @@ ynh_add_nginx_config
 #=================================================
 
 # Set permissions on app files
-chown -R www-data:www-data "$final_path"
+chown -R $app: "$final_path"
 
 #=================================================
 # RELOAD NGINX