diff --git a/conf/config.php b/conf/config.php
index 49ef0ad..2a097d3 100644
--- a/conf/config.php
+++ b/conf/config.php
@@ -183,7 +183,7 @@ define('REVERSE_PROXY_AUTH', true);
 define('REVERSE_PROXY_USER_HEADER', 'REMOTE_USER');
 
 // Username of the admin, by default blank
-define('REVERSE_PROXY_DEFAULT_ADMIN', '__USER__');
+define('REVERSE_PROXY_DEFAULT_ADMIN', '__ADMIN__');
 
 // Default domain to use for setting the email address
 define('REVERSE_PROXY_DEFAULT_DOMAIN', '__DOMAIN__');
diff --git a/manifest.json b/manifest.json
index 6c012c3..55b259d 100644
--- a/manifest.json
+++ b/manifest.json
@@ -14,7 +14,7 @@
     "email": "apps@yunohost.org"
   },
   "requirements": {
-    "yunohost": ">= 3.8.1"
+    "yunohost": ">= 4.0.0"
   },
   "previous_maintainers": [{
     "name": "mbugeia",
@@ -27,7 +27,7 @@
   "multi_instance": true,
   "services": [
     "nginx",
-    "php7.0-fpm",
+    "php7.3-fpm",
     "mysql"
   ],
   "arguments": {
diff --git a/scripts/install b/scripts/install
index 5ca045b..c7f2713 100644
--- a/scripts/install
+++ b/scripts/install
@@ -23,6 +23,7 @@ domain=$YNH_APP_ARG_DOMAIN
 path_url=$YNH_APP_ARG_PATH
 admin=$YNH_APP_ARG_ADMIN
 is_public=$YNH_APP_ARG_IS_PUBLIC
+email=$(ynh_user_get_info --username=$admin --key=mail)
 
 app=$YNH_APP_INSTANCE_NAME
 
@@ -45,7 +46,6 @@ ynh_script_progression --message="Storing installation settings..."
 
 ynh_app_setting_set --app=$app --key=domain --value=$domain
 ynh_app_setting_set --app=$app --key=adminusername --value=$admin
-ynh_app_setting_set --app=$app --key=is_public --value=$is_public
 
 #=================================================
 # STANDARD MODIFICATIONS
@@ -101,18 +101,10 @@ phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)
 #=================================================
 ynh_script_progression --message="Configuring Kanboard..."
 
-# Retrieve admin email
-email=$(ynh_user_get_info --username=$admin --key=mail)
-
 # Copy and edit config.php
-config_php="${final_path}/config.php"
+config_php="$final_path/config.php"
 
-cp ../conf/config.php "$config_php"
-ynh_replace_string --match_string="__DB_PWD__" --replace_string="$db_pwd" --target_file="$config_php"
-ynh_replace_string --match_string="__DB_NAME__" --replace_string=$db_name --target_file="$config_php"
-ynh_replace_string --match_string="__USER__"    --replace_string=$admin   --target_file="$config_php"
-ynh_replace_string --match_string="__EMAIL__"   --replace_string=$email   --target_file="$config_php"
-ynh_replace_string --match_string="__DOMAIN__"  --replace_string=$domain  --target_file="$config_php"
+ynh_add_config --template="../conf/config.php" --destination="$config_php"
 
 #=================================================
 # DATABASE INITIALIZATION
@@ -120,11 +112,11 @@ ynh_replace_string --match_string="__DOMAIN__"  --replace_string=$domain  --targ
 ynh_script_progression --message="Initializing database..." --weight=7
 
 ynh_mysql_connect_as --user="$db_name" --password="$db_pwd" --database="$db_name" < "${final_path}/app/Schema/Sql/mysql.sql"
-(
-	cd "$final_path"
+
+pushd $final_path
 	# Launch database migration
-	php$YNH_PHP_VERSION cli db:migrate --no-interaction --verbose
-)
+	php$phpversion cli db:migrate --no-interaction --verbose
+popd
 
 #=================================================
 # GENERIC FINALIZATION
@@ -147,12 +139,10 @@ ynh_add_fail2ban_config --logpath="/var/log/nginx/$domain-error.log" --failregex
 #=================================================
 # SETUP CRON
 #=================================================
-ynh_script_progression --message="Setuping a cron..."
+ynh_script_progression --message="Setuping a cron..." --weight=1
+
+ynh_add_config --template="../conf/cron_kanboard" --destination="$/etc/cron.d/$app"
 
-cp ../conf/cron_kanboard /etc/cron.d/$app
-ynh_replace_string --match_string="__FINALPATH__" --replace_string="$final_path/" --target_file="/etc/cron.d/$app"
-ynh_replace_string --match_string="__APP__" --replace_string="$app" --target_file="/etc/cron.d/$app"
-ynh_replace_string --match_string="__PHPVERSION__" --replace_string="$phpversion" --target_file="/etc/cron.d/$app"
 chmod 644 "/etc/cron.d/$app"
 
 #=================================================
@@ -178,7 +168,7 @@ ynh_store_file_checksum --file="$config_php"
 #=================================================
 # 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
 
diff --git a/scripts/upgrade b/scripts/upgrade
index 22f3485..e4a37dd 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -22,7 +22,9 @@ admin=$(ynh_app_setting_get --app=$app --key=adminusername)
 is_public=$(ynh_app_setting_get --app=$app --key=is_public)
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 db_name=$(ynh_app_setting_get --app=$app --key=db_name)
+db_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)
 phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)
+email=$(ynh_user_get_info --username=$admin --key=mail)
 
 #=================================================
 # CHECK VERSION
@@ -117,34 +119,24 @@ ynh_add_fpm_config --package="$extra_php_dependencies"
 #=================================================
 ynh_script_progression --message="Reconfiguring Kanboard..." --weight=2
 
-# Retrieve admin email
-email=$(ynh_user_get_info --username=$admin --key=mail)
-
 # Copy and edit config.php
-config_php="${final_path}/config.php"
+config_php="$final_path/config.php"
 
 ynh_backup_if_checksum_is_different --file="$config_php"
 
-cp ../conf/config.php "$config_php"
-db_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)
-ynh_replace_string --match_string="__DB_PWD__" --replace_string="$db_pwd" --target_file="$config_php"
-ynh_replace_string --match_string="__DB_NAME__" --replace_string=$db_name --target_file="$config_php"
-ynh_replace_string --match_string="__USER__"    --replace_string=$admin   --target_file="$config_php"
-ynh_replace_string --match_string="__EMAIL__"   --replace_string=$email   --target_file="$config_php"
-ynh_replace_string --match_string="__DOMAIN__"  --replace_string=$domain  --target_file="$config_php"
+ynh_add_config --template="../conf/config.php" --destination="$config_php"
 
 #=================================================
 # UPGRADE KANBOARD
 #=================================================
 ynh_script_progression --message="Upgrading Kanboard..." --weight=2
 
-(
-	cd "$final_path"
+pushd $final_path
 	# Launch database migration
-	php$YNH_PHP_VERSION cli db:migrate --no-interaction --verbose
+	php$phpversion cli db:migrate --no-interaction --verbose
 	# Launch plugins migration
-	php$YNH_PHP_VERSION cli plugin:upgrade --no-interaction --verbose
-)
+	php$phpversion cli plugin:upgrade --no-interaction --verbose
+popd
 
 #=================================================
 # GENERIC FINALIZATION
@@ -169,10 +161,8 @@ ynh_add_fail2ban_config --logpath="/var/log/nginx/$domain-error.log" --failregex
 #=================================================
 ynh_script_progression --message="Setuping a cron..."
 
-cp ../conf/cron_kanboard /etc/cron.d/$app
-ynh_replace_string --match_string="__FINALPATH__" --replace_string="$final_path/" --target_file="/etc/cron.d/$app"
-ynh_replace_string --match_string="__APP__" --replace_string="$app" --target_file="/etc/cron.d/$app"
-ynh_replace_string --match_string="__PHPVERSION__" --replace_string="$phpversion" --target_file="/etc/cron.d/$app"
+ynh_add_config --template="../conf/cron_kanboard" --destination="$/etc/cron.d/$app"
+
 chmod 644 "/etc/cron.d/$app"
 
 #=================================================