diff --git a/README.md b/README.md
index 80f67f9..c19b30a 100644
--- a/README.md
+++ b/README.md
@@ -12,12 +12,12 @@ Overview
 
 pgAdmin is a feature rich Open Source administration and development platform for PostgreSQL.
 
-**Shipped version:** 4-4.25
+**Shipped version:** 4-4.28
 
 Screenshots
 -----------
 
-![](https://www.pgadmin.org/static/img/screenshots/pgadmin4-welcome.png)
+![](https://www.pgadmin.org/static/COMPILED/assets/img/screenshots/pgadmin4-welcome-light.png)
 
 Documentation
 -------------
diff --git a/conf/armv7_buster.src b/conf/armv7_buster.src
index fdee009..b58682b 100644
--- a/conf/armv7_buster.src
+++ b/conf/armv7_buster.src
@@ -1,5 +1,5 @@
-SOURCE_URL=https://github.com/Josue-T/pgadmin_python_build/releases/download/v4-4.25/pgadmin_4-4.25-buster-bin1_armv7l.tar.gz
-SOURCE_SUM=1ae1e3d6ec1343c86808cfc578066d56b22a72d7967ca8dbf0fb85ddfd495142
+SOURCE_URL=https://github.com/Josue-T/pgadmin_python_build/releases/download/v4-4.28/pgadmin_4-4.28-buster-bin1_armv7l.tar.gz
+SOURCE_SUM=631919aadf076649365df7040c0b51fb5c8aaf45c9770613a38ccb392caea39a
 # (Optional) Program to check the integrity (sha256sum, md5sum...)
 # default: sha256
 SOURCE_SUM_PRG=sha256sum
diff --git a/conf/armv7_stretch.src b/conf/armv7_stretch.src
index db6283e..5fc1e3d 100644
--- a/conf/armv7_stretch.src
+++ b/conf/armv7_stretch.src
@@ -1,5 +1,5 @@
-SOURCE_URL=https://github.com/Josue-T/pgadmin_python_build/releases/download/v4-4.25/pgadmin_4-4.25-stretch-bin1_armv7l.tar.gz
-SOURCE_SUM=283bf536c761644e330f4885d7c19be8eb665d6fc01503486690f1f3c97f2841
+SOURCE_URL=https://github.com/Josue-T/pgadmin_python_build/releases/download/v4-4.28/pgadmin_4-4.28-stretch-bin1_armv7l.tar.gz
+SOURCE_SUM=f9c786137c9f401e20f738737c12c02ae4f8d645b80544c78752ecba1a5f280d
 # (Optional) Program to check the integrity (sha256sum, md5sum...)
 # default: sha256
 SOURCE_SUM_PRG=sha256sum
diff --git a/conf/nginx.conf b/conf/nginx.conf
index bcd94f2..e184597 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -1,6 +1,6 @@
 location __PATH__ {
     include uwsgi_params;
-    uwsgi_pass unix:///var/run/__NAME__/app.socket;
+    uwsgi_pass unix:///run/__NAME__/app.socket;
 
     uwsgi_read_timeout 180;
     uwsgi_send_timeout 180;
diff --git a/manifest.json b/manifest.json
index bf850e1..0efa007 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
         "en": "Manage PostgreSQL databases over the web",
         "fr": "Application web de gestion des bases de données PostgreSQL"
     },
-    "version": "4-4.25~ynh1",
+    "version": "4-4.28~ynh1",
     "url": "https://www.pgadmin.org",
     "license": "PostgreSQL",
     "maintainer": {
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 7457f45..59afd95 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -4,16 +4,10 @@
 
 app=$YNH_APP_INSTANCE_NAME
 final_path=/opt/yunohost/$app
-pgadmin_user="pgadmin"
+pgadmin_user="$app"
 python_version="$(python3 -V | cut -d' ' -f2 | cut -d. -f1-2)"
 dependances="python3-pip build-essential python3-dev python3-venv postgresql uwsgi uwsgi-plugin-python3 expect libpq-dev"
 
-if [[ -e "../settings/manifest.json" ]] || [[ -e "../manifest.json" ]]; then
-    APP_VERSION=$(ynh_app_upstream_version)
-    app_main_version=$(echo $APP_VERSION | cut -d'-' -f1)
-    app_sub_version=$(echo $APP_VERSION | cut -d'-' -f2)
-fi
-
 #=================================================
 # DEFINE ALL COMMON FONCTIONS
 #=================================================
diff --git a/scripts/backup b/scripts/backup
index 9825ae9..52ff421 100644
--- a/scripts/backup
+++ b/scripts/backup
@@ -4,21 +4,24 @@
 # GENERIC START
 #=================================================
 
+# Import common cmd
+source ../settings/scripts/experimental_helper.sh
+source ../settings/scripts/_common.sh
+
 # IMPORT GENERIC HELPERS
 source /usr/share/yunohost/helpers
 
 # Exit if an error occurs during the execution of the script
 ynh_abort_if_errors
 
-# Import common cmd
-source ../settings/scripts/experimental_helper.sh
-source ../settings/scripts/_common.sh
-
 # LOAD SETTINGS
 ynh_script_progression --message="Loading installation settings..."
 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 $app --key db_name)
+app_version=$(ynh_app_upstream_version)
+app_main_version=$(echo $app_version | cut -d'-' -f1)
+app_sub_version=$(echo $app_version | cut -d'-' -f2)
 
 #=================================================
 # STANDARD BACKUP STEPS
diff --git a/scripts/change_url b/scripts/change_url
index ce0313d..828f568 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -4,16 +4,16 @@
 # GENERIC START
 #=================================================
 
+# Import common cmd
+source ./experimental_helper.sh
+source ./_common.sh
+
 # Source YunoHost helpers
 source /usr/share/yunohost/helpers
 
 # Stop script if errors
 ynh_abort_if_errors
 
-# Import common cmd
-source ./experimental_helper.sh
-source ./_common.sh
-
 # Retrive arguments
 ynh_script_progression --message="Loading installation settings..."
 old_domain=$YNH_APP_OLD_DOMAIN
@@ -42,10 +42,9 @@ ynh_add_nginx_config
 ynh_add_uwsgi_service 'pgadmin_user python_version'
 
 # Reload services
-ynh_script_progression --message="Reloading services..."
-sudo systemctl reload nginx.service
+ynh_script_progression --message="Restarting $app services..." --weight=3
 ynh_systemd_action --service_name "uwsgi-app@$app.service" --action restart \
-    --line_match "WSGI app 0 \(mountpoint='$path_url'\) ready in [[:digit:]]* seconds on interpreter" --log_path "/var/log/uwsgi/$app/pgadmin.log"
+    --line_match "WSGI app 0 \(mountpoint='[/[:alnum:]_-]*'\) ready in [[:digit:]]* seconds on interpreter" --log_path "/var/log/uwsgi/$app/$app.log"
 sleep 10
 
 ynh_script_progression --message="Change of URL completed for $app" --last
diff --git a/scripts/experimental_helper.sh b/scripts/experimental_helper.sh
index a5cc663..3b75020 100644
--- a/scripts/experimental_helper.sh
+++ b/scripts/experimental_helper.sh
@@ -6,10 +6,9 @@
 #
 # usage: ynh_check_global_uwsgi_config
 ynh_check_global_uwsgi_config () {
-    uwsgi --version || ynh_die --message "You need to add uwsgi (and appropriate plugin) as a dependency"
+    uwsgi --version || ynh_die --message="You need to add uwsgi (and appropriate plugin) as a dependency"
 
     cat > /etc/systemd/system/uwsgi-app@.service <<EOF
-[Unit]
 Description=%i uWSGI app
 After=syslog.target
 
@@ -17,7 +16,7 @@ After=syslog.target
 RuntimeDirectory=%i
 ExecStart=/usr/bin/uwsgi \
         --ini /etc/uwsgi/apps-available/%i.ini \
-        --socket /var/run/%i/app.socket \
+        --socket /run/%i/app.socket \
         --logto /var/log/uwsgi/%i/%i.log
 User=%i
 Group=www-data
@@ -52,6 +51,10 @@ EOF
 #
 # To be able to customise the settings of the systemd unit you can override the rules with the file "conf/uwsgi-app@override.service".
 # This file will be automatically placed on the good place
+# 
+# Note that the service need to be started manually at the end of the installation.
+# Generally you can start the service with this command:
+# ynh_systemd_action --service_name "uwsgi-app@$app.service" --line_match "WSGI app 0 \(mountpoint='[/[:alnum:]_-]*'\) ready in [[:digit:]]* seconds on interpreter" --log_path "/var/log/uwsgi/$app/$app.log"
 #
 # usage: ynh_add_uwsgi_service
 #
@@ -63,21 +66,21 @@ ynh_add_uwsgi_service () {
     local finaluwsgiini="/etc/uwsgi/apps-available/$app.ini"
 
     # www-data group is needed since it is this nginx who will start the service
-    usermod --append --groups www-data "$app" || ynh_die --message "It wasn't possible to add user $app to group www-data"
+    usermod --append --groups www-data "$app" || ynh_die --message="It wasn't possible to add user $app to group www-data"
 
-    ynh_backup_if_checksum_is_different "$finaluwsgiini"
+    ynh_backup_if_checksum_is_different --file="$finaluwsgiini"
     cp ../conf/uwsgi.ini "$finaluwsgiini"
 
     # To avoid a break by set -u, use a void substitution ${var:-}. If the variable is not set, it's simply set with an empty variable.
     # Substitute in a nginx config file only if the variable is not empty
     if test -n "${final_path:-}"; then
-        ynh_replace_string --match_string "__FINALPATH__" --replace_string "$final_path" --target_file "$finaluwsgiini"
+        ynh_replace_string --match_string="__FINALPATH__" --replace_string="$final_path" --target_file="$finaluwsgiini"
     fi
     if test -n "${path_url:-}"; then
-        ynh_replace_string --match_string "__PATH__" --replace_string "$path_url" --target_file "$finaluwsgiini"
+        ynh_replace_string --match_string="__PATH__" --replace_string="$path_url" --target_file="$finaluwsgiini"
     fi
     if test -n "${app:-}"; then
-        ynh_replace_string --match_string "__APP__" --replace_string "$app" --target_file "$finaluwsgiini"
+        ynh_replace_string --match_string="__APP__" --replace_string="$app" --target_file="$finaluwsgiini"
     fi
 
     # Replace all other variable given as arguments
@@ -85,10 +88,10 @@ ynh_add_uwsgi_service () {
     do
         # ${var_to_replace^^} make the content of the variable on upper-cases
         # ${!var_to_replace} get the content of the variable named $var_to_replace 
-        ynh_replace_string --match_string "__${var_to_replace^^}__" --replace_string "${!var_to_replace}" --target_file "$finaluwsgiini"
+        ynh_replace_string --match_string="__${var_to_replace^^}__" --replace_string="${!var_to_replace}" --target_file="$finaluwsgiini"
     done
 
-    ynh_store_file_checksum --file "$finaluwsgiini"
+    ynh_store_file_checksum --file="$finaluwsgiini"
 
     chown $app:root "$finaluwsgiini"
 
@@ -115,8 +118,9 @@ ynh_add_uwsgi_service () {
 ynh_remove_uwsgi_service () {
     local finaluwsgiini="/etc/uwsgi/apps-available/$app.ini"
     if [ -e "$finaluwsgiini" ]; then
-        systemctl disable "uwsgi-app@$app.service"
         yunohost service remove "uwsgi-app@$app"
+        systemctl stop "uwsgi-app@$app.service"
+        systemctl disable "uwsgi-app@$app.service"
 
         ynh_secure_remove --file="$finaluwsgiini"
         ynh_secure_remove --file="/var/log/uwsgi/$app"
diff --git a/scripts/install b/scripts/install
index b775c7f..d9f0cc8 100644
--- a/scripts/install
+++ b/scripts/install
@@ -4,16 +4,16 @@
 # GENERIC START
 #=================================================
 
+# Import common cmd
+source ./experimental_helper.sh
+source ./_common.sh
+
 # IMPORT GENERIC HELPERS
 source /usr/share/yunohost/helpers
 
 # Exit if an error occurs during the execution of the script
 ynh_abort_if_errors
 
-# Import common cmd
-source ./experimental_helper.sh
-source ./_common.sh
-
 ynh_script_progression --message="Validating installation parameters..."
 
 # RETRIEVE ARGUMENTS FROM THE MANIFEST
@@ -22,6 +22,9 @@ path_url=$(ynh_normalize_url_path --path_url $YNH_APP_ARG_PATH)
 admin=$YNH_APP_ARG_ADMIN
 db_user="pgadmin"
 admin_pwd=$YNH_APP_ARG_ADMIN_PASSWORD
+app_version=$(ynh_app_upstream_version)
+app_main_version=$(echo $app_version | cut -d'-' -f1)
+app_sub_version=$(echo $app_version | cut -d'-' -f2)
 
 # CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
 test ! -e "$final_path" || ynh_die --message "This path already contains a folder"
@@ -118,9 +121,9 @@ ynh_script_progression --message="Configuring log rotation..."
 ynh_use_logrotate --logfile /var/log/pgadmin
 
 # reload uwsgi
-ynh_script_progression --message="Starting pgadmin services..." --weight=3
+ynh_script_progression --message="Starting $app services..." --weight=3
 ynh_systemd_action --service_name "uwsgi-app@$app.service" \
-    --line_match "WSGI app 0 \(mountpoint='$path_url'\) ready in [[:digit:]]* seconds on interpreter" --log_path "/var/log/uwsgi/$app/pgadmin.log"
+    --line_match "WSGI app 0 \(mountpoint='[/[:alnum:]_-]*'\) ready in [[:digit:]]* seconds on interpreter" --log_path "/var/log/uwsgi/$app/$app.log"
 sleep 10
 
 ynh_script_progression --message="Installation of $app completed" --last
diff --git a/scripts/remove b/scripts/remove
index 89e7115..17b0d03 100644
--- a/scripts/remove
+++ b/scripts/remove
@@ -4,9 +4,6 @@
 # GENERIC START
 #=================================================
 
-# Source YunoHost helpers
-source /usr/share/yunohost/helpers
-
 # Stop script if errors
 set -u
 
@@ -14,6 +11,9 @@ set -u
 source ./experimental_helper.sh
 source ./_common.sh
 
+# Source YunoHost helpers
+source /usr/share/yunohost/helpers
+
 # LOAD SETTINGS
 ynh_script_progression --message="Loading installation settings..."
 domain=$(ynh_app_setting_get --app $app --key domain)
diff --git a/scripts/restore b/scripts/restore
index c73b798..d9621c6 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -4,16 +4,16 @@
 # GENERIC START
 #=================================================
 
+# Import common cmd
+source ../settings/scripts/experimental_helper.sh
+source ../settings/scripts/_common.sh
+
 # IMPORT GENERIC HELPERS
 source /usr/share/yunohost/helpers
 
 # Exit if an error occurs during the execution of the script
 ynh_abort_if_errors
 
-# Import common cmd
-source ../settings/scripts/experimental_helper.sh
-source ../settings/scripts/_common.sh
-
 # LOAD SETTINGS
 ynh_script_progression --message="Loading settings..."
 domain=$(ynh_app_setting_get --app $app --key domain)
@@ -23,6 +23,9 @@ final_path=$(ynh_app_setting_get --app $app --key final_path)
 db_name=$(ynh_app_setting_get --app $app --key db_name)
 db_user=$(ynh_app_setting_get --app $app --key db_user)
 db_pwd=$(ynh_app_setting_get --app $app --key db_pwd)
+app_version=$(ynh_app_upstream_version)
+app_main_version=$(echo $app_version | cut -d'-' -f1)
+app_sub_version=$(echo $app_version | cut -d'-' -f2)
 
 #=================================================
 # STANDARD RESTORATION STEPS
@@ -74,7 +77,7 @@ ynh_use_logrotate --logfile /var/log/pgadmin
 # reload uwsgi and nginx
 ynh_script_progression --message="Starting pgadmin services..." --weight=3
 ynh_systemd_action --service_name "uwsgi-app@$app.service" \
-    --line_match "WSGI app 0 \(mountpoint='$path_url'\) ready in [[:digit:]]* seconds on interpreter" --log_path "/var/log/uwsgi/$app/pgadmin.log"
+    --line_match "WSGI app 0 \(mountpoint='[/[:alnum:]_-]*'\) ready in [[:digit:]]* seconds on interpreter" --log_path "/var/log/uwsgi/$app/$app.log"
 systemctl reload nginx
 sleep 10
 
diff --git a/scripts/upgrade b/scripts/upgrade
index 110f580..5013c0d 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -4,21 +4,24 @@
 # GENERIC START
 #=================================================
 
+# Import common cmd
+source ./experimental_helper.sh
+source ./_common.sh
+
 # IMPORT GENERIC HELPERS
 source /usr/share/yunohost/helpers
 
 # Exit if an error occurs during the execution of the script
 ynh_abort_if_errors
 
-# Import common cmd
-source ./experimental_helper.sh
-source ./_common.sh
-
 # LOAD SETTINGS
 ynh_script_progression --message="Loading installation settings..."
 domain=$(ynh_app_setting_get --app $app --key domain)
 path_url=$(ynh_normalize_url_path --path_url $(ynh_app_setting_get --app $app --key path))
 admin=$(ynh_app_setting_get --app $app --key admin)
+app_version=$(ynh_app_upstream_version)
+app_main_version=$(echo $app_version | cut -d'-' -f1)
+app_sub_version=$(echo $app_version | cut -d'-' -f2)
 
 # BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
 ynh_script_progression --message="Backing up the app before upgrading (may take a while)..." --weight=10
@@ -68,9 +71,9 @@ ynh_script_progression --message="Configuring log rotation..."
 ynh_use_logrotate --logfile /var/log/pgadmin --nonappend
 
 # reload uwsgi
-ynh_script_progression --message="Restarting pgadmin services..." --weight=3
+ynh_script_progression --message="Restarting $app services..." --weight=3
 ynh_systemd_action --service_name "uwsgi-app@$app.service" \
-    --line_match "WSGI app 0 \(mountpoint='$path_url'\) ready in [[:digit:]]* seconds on interpreter" --log_path "/var/log/uwsgi/$app/pgadmin.log"
+    --line_match "WSGI app 0 \(mountpoint='[/[:alnum:]_-]*'\) ready in [[:digit:]]* seconds on interpreter" --log_path "/var/log/uwsgi/$app/$app.log"
 sleep 10
 
 ynh_script_progression --message="Upgrade of $app completed" --last