diff --git a/.github/ISSUE_TEMPLATE.md b/.github/ISSUE_TEMPLATE.md
new file mode 100644
index 0000000..2729a6b
--- /dev/null
+++ b/.github/ISSUE_TEMPLATE.md
@@ -0,0 +1,55 @@
+---
+name: Bug report
+about: When creating a bug report, please use the following template to provide all the relevant information and help debugging efficiently.
+
+---
+
+**How to post a meaningful bug report**
+1. *Read this whole template first.*
+2. *Determine if you are on the right place:*
+   - *If you were performing an action on the app from the webadmin or the CLI (install, update, backup, restore, change_url...), you are on the right place!*
+   - *Otherwise, the issue may be due to the app itself. Refer to its documentation or repository for help.*
+   - *When in doubt, post here and we will figure it out together.*
+3. *Delete the italic comments as you write over them below, and remove this guide.*
+--- 
+
+### Describe the bug
+
+*A clear and concise description of what the bug is.*
+
+### Context
+
+- Hardware: *VPS bought online / Old laptop or computer / Raspberry Pi at home / Internet Cube with VPN / Other ARM board / ...*
+- YunoHost version: x.x.x
+- I have access to my server: *Through SSH | through the webadmin | direct access via keyboard / screen | ...*
+- Are you in a special context or did you perform some particular tweaking on your YunoHost instance?: *no / yes*
+  - If yes, please explain:
+- Using, or trying to install package version/branch:
+- If upgrading, current package version: *can be found in the admin, or with `yunohost app info $app_id`*
+
+### Steps to reproduce
+
+- *If you performed a command from the CLI, the command itself is enough. For example:*
+    ```sh
+    sudo yunohost app install the_app
+    ```
+- *If you used the webadmin, please perform the equivalent command from the CLI first.*
+- *If the error occurs in your browser, explain what you did:*
+   1. *Go to '...'*
+   2. *Click on '...'*
+   3. *Scroll down to '...'*
+   4. *See error*
+
+### Expected behavior
+
+*A clear and concise description of what you expected to happen. You can remove this section if the command above is enough to understand your intent.*
+
+### Logs
+
+*When an operation fails, YunoHost provides a simple way to share the logs.*
+- *In the webadmin, the error message contains a link to the relevant log page. On that page, you will be able to 'Share with Yunopaste'. If you missed it, the logs of previous operations are also available under Tools > Logs.*
+- *In command line, the command to share the logs is displayed at the end of the operation and looks like `yunohost log display [log name] --share`. If you missed it, you can find the log ID of a previous operation using `yunohost log list`.*
+
+*After sharing the log, please copypaste directly the link provided by YunoHost (to help readability, no need to copypaste the entire content of the log here, just the link is enough...)*
+
+*If applicable and useful, add screenshots to help explain your problem.*
diff --git a/.github/PULL_REQUEST_TEMPLATE.md b/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000..ef70e18
--- /dev/null
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,16 @@
+## Problem
+
+- *Description of why you made this PR*
+
+## Solution
+
+- *And how do you fix that problem*
+
+## PR Status
+
+- [ ] Code finished and ready to be reviewed/tested
+- [ ] The fix/enhancement were manually tested (if applicable)
+
+## Automatic tests
+
+Automatic tests can be triggered on https://ci-apps-dev.yunohost.org/ *after creating the PR*, by commenting "!testme", "!gogogadgetoci" or "By the power of systemd, I invoke The Great App CI to test this Pull Request!". (N.B. : for this to work you need to be a member of the Yunohost-Apps organization)
diff --git a/check_process b/check_process
index f8e92f9..e4f025c 100644
--- a/check_process
+++ b/check_process
@@ -1,18 +1,12 @@
-# See here for more information
-# https://github.com/YunoHost/package_check#syntax-check_process-file
-
-# Move this file from check_process.default to check_process when you have filled it.
-
 ;; Test complet
 	; Manifest
-		domain="domain.tld"	(DOMAIN)
-		path="/path"	(PATH)
-		admin="john"	(USER)
+		domain="domain.tld"
+		path="/path"
+		admin="john"
 		language="en"
-		is_public=1	(PUBLIC|public=1|private=0)
-		# at least 6 caracters for fluxbb password
+		is_public=1
 		password="password_fluxbb"
-		port="666"	(PORT)
+		port="666"
 	; Checks
 		pkg_linter=1
 		setup_sub_dir=1
diff --git a/doc/DISCLAIMER.md b/doc/DISCLAIMER.md
new file mode 100644
index 0000000..e69de29
diff --git a/sources/images/fluxbb_screenshot.png b/doc/screenshots/fluxbb_screenshot.png
similarity index 100%
rename from sources/images/fluxbb_screenshot.png
rename to doc/screenshots/fluxbb_screenshot.png
diff --git a/manifest.json b/manifest.json
index 2b78c8c..1cc637d 100644
--- a/manifest.json
+++ b/manifest.json
@@ -8,6 +8,13 @@
     },
     "version": "1.5.11~ynh2",
     "url": "https://fluxbb.org/",
+    "upstream": {
+        "license": "GPL-2.0-only",
+        "website": "https://fluxbb.org/",
+        "demo": "https://fluxbb.org/forums/index.php",
+        "admindoc": "https://fluxbb.org/docs/",
+        "userdoc": "https://yunohost.org/en/app_fluxbb"
+    },
     "license": "GPL-2.0-only",
     "maintainer": {
         "name": "Antoine",
@@ -15,7 +22,7 @@
         "url": "https://miaou.org"
     },
     "requirements": {
-        "yunohost": ">= 4.1.7"
+        "yunohost": ">= 4.2.4"
     },
     "multi_instance": true,
     "services": [
diff --git a/pull_request_template.md b/pull_request_template.md
deleted file mode 100644
index 6c28fc5..0000000
--- a/pull_request_template.md
+++ /dev/null
@@ -1,16 +0,0 @@
-## 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
----
-* An automatic package_check will be launch at https://ci-apps-dev.yunohost.org/, when you add a specific comment to your Pull Request: "!testme", "!gogogadgetoci" or "By the power of systemd, I invoke The Great App CI to test this Pull Request!"*
diff --git a/scripts/backup b/scripts/backup
index 76ae0dc..97a2b0c 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -22,7 +22,7 @@ ynh_abort_if_errors
 #=================================================
 # LOAD SETTINGS
 #=================================================
-ynh_print_info "Loading installation settings..."
+ynh_print_info --message="Loading installation settings..."
 
 app=$YNH_APP_INSTANCE_NAME
 
@@ -40,26 +40,25 @@ ynh_print_info --message="Declaring files to be backed up..."
 # BACKUP THE APP MAIN DIR
 #=================================================
 
-ynh_backup "$final_path"
+ynh_backup --src_path="$final_path"
 
 #=================================================
 # BACKUP THE NGINX CONFIGURATION
 #=================================================
 
-ynh_backup "/etc/nginx/conf.d/$domain.d/$app.conf"
+ynh_backup --src_path="/etc/nginx/conf.d/$domain.d/$app.conf"
 
 #=================================================
 # BACKUP THE PHP-FPM CONFIGURATION
 #=================================================
 
-ynh_backup "/etc/php/$phpversion/fpm/pool.d/$app.conf"
+ynh_backup --src_path="/etc/php/$phpversion/fpm/pool.d/$app.conf"
 
 #=================================================
 # BACKUP THE MYSQL DATABASE
 #=================================================
-ynh_print_info "Backing up the MySQL database..."
 
-ynh_mysql_dump_db "$db_name" > db.sql
+ynh_mysql_dump_db --database="$db_name" > db.sql
 
 #=================================================
 # END OF SCRIPT
diff --git a/scripts/install b/scripts/install
index 9628152..78a3a8f 100755
--- a/scripts/install
+++ b/scripts/install
@@ -35,7 +35,7 @@ app=$YNH_APP_INSTANCE_NAME
 #=================================================
 # CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
 #=================================================
-ynh_script_progression --message="Validating installation parameters..."
+ynh_script_progression --message="Validating installation parameters..." --weight=1
 
 final_path=/var/www/$app
 test ! -e "$final_path" || ynh_die "This path already contains a folder"
@@ -46,7 +46,7 @@ ynh_webpath_register --app=$app --domain=$domain --path_url=$path_url
 #=================================================
 # STORE SETTINGS FROM MANIFEST
 #=================================================
-ynh_script_progression --message="Storing installation settings..."
+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
@@ -56,54 +56,51 @@ ynh_app_setting_set --app=$app --key=language --value=$language
 #=================================================
 # CREATE A MYSQL DATABASE
 #=================================================
-ynh_print_info "Creating a MySQL database..."
+ynh_script_progression --message="Creating a MySQL database..." --weight=1
 
 db_name=$(ynh_sanitize_dbid --db_name=$app)
 db_user=$db_name
 ynh_app_setting_set --app=$app --key=db_name --value=$db_name
 ynh_mysql_setup_db --db_user=$db_user --db_name=$db_name
 
+#=================================================
+# 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"
+
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
-ynh_script_progression --message="Setting up source files..."
+ynh_script_progression --message="Setting up source files..." --weight=1
 
 ynh_app_setting_set --app=$app --key=final_path --value=$final_path
 # Download, check integrity, uncompress and patch the source from app.src
 ynh_setup_source --dest_dir="$final_path"
 
+chmod 750 "$final_path"
+chmod -R o-rwx "$final_path"
+chown -R $app:www-data "$final_path"
+
 #=================================================
 # NGINX CONFIGURATION
 #=================================================
-ynh_script_progression --message="Configuring NGINX web server..."
+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..."
-
-# Create a system user
-ynh_system_user_create --username=$app
-
 #=================================================
 # PHP-FPM CONFIGURATION
 #=================================================
-ynh_script_progression --message="Configuring PHP-FPM..."
+ynh_script_progression --message="Configuring PHP-FPM..." --weight=1
 
 # Create a dedicated php-fpm config
 ynh_add_fpm_config
 phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)
 
-#=================================================
-# SECURE FILES AND DIRECTORIES
-#=================================================
-
-# Set permissions to app files
-chown -R $app: $final_path
-
 #=================================================
 # SETUP APPLICATION WITH CURL
 #=================================================
@@ -121,6 +118,8 @@ ynh_local_curl "/install.php" "form_sent=1" "install_lang=English" "req_db_type=
 
 ynh_secure_remove  "$final_path/install.php"
 
+ynh_permission_update --permission="main" --remove="visitors"
+
 #=================================================
 # ADVERTISE SERVICE IN ADMIN PANEL
 #=================================================
@@ -130,17 +129,17 @@ yunohost service add $app --description="Fast, light, user-friendly forum softwa
 #=================================================
 # SETUP SSOWAT
 #=================================================
-ynh_print_info "Configuring permissions..."
+ynh_script_progression --message="Configuring permissions..." --weight=1
 
-if [ $is_public -eq 0 ]
+if [ $is_public -eq 1 ]
 then
-	ynh_permission_update --permission="main" --remove="visitors"
+	ynh_permission_update --permission="main" --add="visitors"
 fi
 
 #=================================================
 # RELOAD NGINX
 #=================================================
-ynh_script_progression --message="Reloading NGINX web server..."
+ynh_script_progression --message="Reloading NGINX web server..." --weight=1
 
 ynh_systemd_action --service_name=nginx --action=reload
 
@@ -148,4 +147,4 @@ ynh_systemd_action --service_name=nginx --action=reload
 # END OF SCRIPT
 #=================================================
 
-ynh_script_progression --message="Installation of $app completed"
+ynh_script_progression --message="Installation of $app completed" --last
diff --git a/scripts/restore b/scripts/restore
index aeaf963..137dfef 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -43,50 +43,47 @@ ynh_webpath_available $domain $path_url \
 test ! -d $final_path \
 	|| ynh_die "There is already a directory: $final_path "
 
-#=================================================
-# STANDARD RESTORATION STEPS
 #=================================================
 # RESTORE THE NGINX CONFIGURATION
 #=================================================
+ynh_script_progression --message="Restoring the NGINX configuration..." --weight=1
 
-ynh_restore_file "/etc/nginx/conf.d/$domain.d/$app.conf"
+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..."
 
-ynh_restore_file "$final_path"
+ynh_restore_file --origin_path="$final_path"
 
-#=================================================
-# RECREATE THE DEDICATED USER
-#=================================================
-ynh_script_progression --message="Recreating the dedicated system user..."
-
-# Create the dedicated user (if not existing)
-ynh_system_user_create $app
-
-#=================================================
-# RESTORE USER RIGHTS
-#=================================================
-
-# Restore permissions on app files
-chown -R $app: $final_path
+chmod 750 "$final_path"
+chmod -R o-rwx "$final_path"
+chown -R $app:www-data "$final_path"
 
 #=================================================
 # RESTORE THE PHP-FPM CONFIGURATION
 #=================================================
+ynh_script_progression --message="Restoring the PHP-FPM configuration..." --weight=1
 
-ynh_restore_file "/etc/php/$phpversion/fpm/pool.d/$app.conf"
+ynh_restore_file --origin_path="/etc/php/$phpversion/fpm/pool.d/$app.conf"
 
 #=================================================
 # RESTORE THE MYSQL DATABASE
 #=================================================
-ynh_script_progression --message="Restoring the MySQL database..."
+ynh_script_progression --message="Restoring the MySQL database..." --weight=1
 
-db_pwd=$(ynh_app_setting_get $app mysqlpwd)
-ynh_mysql_setup_db $db_name $db_name $db_pwd
-ynh_mysql_connect_as $db_name $db_pwd $db_name < ./db.sql
+db_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)
+ynh_mysql_setup_db --db_user=$db_user --db_name=$db_name --db_pwd=$db_pwd
+ynh_mysql_connect_as --user=$db_user --password=$db_pwd --database=$db_name < ./db.sql
 
 #=================================================
 # ADVERTISE SERVICE IN ADMIN PANEL
diff --git a/scripts/upgrade b/scripts/upgrade
index 367cabd..71f68c1 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -24,10 +24,30 @@ language=$(ynh_app_setting_get --app=$app --key=language)
 db_name=$(ynh_app_setting_get --app=$app --key=db_name)
 phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)
 
+#=================================================
+# 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)..."
+
+# 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
+
 #=================================================
 # ENSURE DOWNWARD COMPATIBILITY
 #=================================================
-ynh_print_info "Ensuring downward compatibility..."
+ynh_script_progression --message="Ensuring downward compatibility..."
 
 # If db_name doesn't exist, create it
 if [ -z $db_name ]; then
@@ -49,28 +69,28 @@ if ynh_legacy_permissions_exists; then
 fi
 
 #=================================================
-# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
+# CREATE DEDICATED USER
 #=================================================
-ynh_print_info "Backing up the app before upgrading (may take a while)..."
+ynh_script_progression --message="Making sure dedicated system user exists..."
 
-# 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
+# Create a dedicated user (if not existing)
+ynh_system_user_create $app --home_dir="$final_path"
 
-#=================================================
-# STANDARD UPGRADE STEPS
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
-ynh_print_info "Upgrading source files..."
 
-# Download, check integrity, uncompress and patch the source from app.src
-ynh_setup_source "$final_path"
+if [ "$upgrade_type" == "UPGRADE_APP" ]
+then
+	ynh_script_progression --message="Upgrading source files..." --time --weight=1
+
+	# Download, check integrity, uncompress and patch the source from app.src
+	ynh_setup_source --dest_dir="$final_path"
+fi
+
+chmod 750 "$final_path"
+chmod -R o-rwx "$final_path"
+chown -R $app:www-data "$final_path"
 
 #=================================================
 # NGINX CONFIGURATION
@@ -80,21 +100,6 @@ ynh_print_info "Upgrading NGINX web server configuration..."
 # Create a dedicated nginx config
 ynh_add_nginx_config
 
-#=================================================
-# UPGRADE DEPENDENCIES
-#=================================================
-ynh_print_info "Upgrading dependencies..."
-
-#ynh_install_app_dependencies deb1 deb2
-
-#=================================================
-# CREATE DEDICATED USER
-#=================================================
-ynh_print_info "Making sure dedicated system user exists..."
-
-# Create a dedicated user (if not existing)
-ynh_system_user_create $app
-
 #=================================================
 # PHP-FPM CONFIGURATION
 #=================================================
@@ -110,13 +115,6 @@ ynh_script_progression --message="Removing install.php"
 
 ynh_secure_remove "$final_path/install.php"
 
-#=================================================
-# SECURE FILES AND DIRECTORIES
-#=================================================
-
-# Set permissions on app files
-chown -R $app: $final_path
-
 #=================================================
 # ADVERTISE SERVICE IN ADMIN PANEL
 #=================================================