diff --git a/manifest.json b/manifest.json
index 5e21de5..0750825 100644
--- a/manifest.json
+++ b/manifest.json
@@ -51,7 +51,10 @@
                     "en": "Choose an admin user for emailpoubelle",
                     "fr": "Choisissez un administrateur pour emailpoubelle"
                 },
-                "example": "homer"
+                "example": "homer",
+                "help": {
+                	"en": "Admin user can access to the control panel, block and remove all redirection and reset any settings",
+                	"fr": "L'administrateur peut accéder au panneau de controle, bloquer et supprimer les redirections ainsi que réinitialiser les réglages"},
             },
             {
                 "name": "password",
@@ -69,7 +72,10 @@
                     "en": "Is it a public application?",
                     "fr": "Est-ce une application publique ?"
                 },
-                "default": false
+                "default": false,
+                "help": {
+                	"en": "The app can be accessed outside Yunohost and anyone will be able to create a trash email adress"
+                	"fr": "L'application sera accessible en dehors de yunohost et n'importe qui pourra y créer une adresse poubelle"},
             }
         ]
     }
diff --git a/scripts/install b/scripts/install
index 136819c..abe9217 100644
--- a/scripts/install
+++ b/scripts/install
@@ -71,7 +71,7 @@ locale-gen
 ynh_print_info "Downloading sources to $final_path"
 # Download, check integrity, uncompress and patch the source from app.src
 ynh_setup_source "$final_path"
-sudo cp ../conf/index_source.php $final_path/www/index.php
+cp ../conf/index_source.php $final_path/www/index.php
 ynh_replace_string "Template-exemple" "$domain" $final_path/www/index.php
 
 #Temporaire - mettre en config
@@ -92,7 +92,7 @@ ynh_app_setting_set $app mysqlpwd $db_pwd
 ynh_print_ON
 
 #configuring with given settings
-sudo cp $final_path/conf-dist.php $final_path/conf.php
+cp $final_path/conf-dist.php $final_path/conf.php
 #Update various conf : domain, database, user and password
 ynh_replace_string "exemple.fr"                  "$domain"                    $final_path/conf.php
 ynh_replace_string "exemple.com"                 "$domain"                    $final_path/conf.php
@@ -108,7 +108,7 @@ ynh_replace_string "motdepassedefou"             "$db_pwd"                    $f
 ynh_replace_string "define('ADMIN_PASSWORD', 'admin');" "define('ADMIN_PASSWORD', '$password');" $final_path/conf.php
 ynh_print_ON
 #setting conf file not world-readable (dude, there is a plain-text password !)
-sudo chmod o-r $final_path/conf.php
+chmod o-r $final_path/conf.php
 #initialize database (databasename = db_user)
 ynh_print_OFF
 ynh_mysql_create_db $db_user $db_user $db_pwd 
@@ -120,18 +120,18 @@ cp -R ../sources/hooks/conf_regen/98-postfix_emailpoubelle /usr/share/yunohost/h
 yunohost service regen-conf postfix
 
 #create the virtual aliases file 
-sudo touch $final_path/var/virtual
-sudo postmap $final_path/var/virtual
-sudo chown -R www-data:www-data $final_path
+touch $final_path/var/virtual
+postmap $final_path/var/virtual
+chown -R www-data:www-data $final_path
 
 #create an alias for deleted junk adresses
-sudo cp /etc/aliases /etc/aliases.emailpoubelle.bak #backup it 
-sudo echo "devnull:/dev/null" | sudo tee -a /etc/aliases
-sudo newaliases
+cp /etc/aliases /etc/aliases.emailpoubelle.bak #backup it 
+echo "devnull:/dev/null" | tee -a /etc/aliases
+newaliases
 
 #adding cronjob for removing expired email addresses
-sudo cp -a ../conf/$app.cron /etc/cron.d/$app
-sudo chmod 644 /etc/cron.d/$app
+cp -a ../conf/$app.cron /etc/cron.d/$app
+chmod 644 /etc/cron.d/$app
 
 # Create a dedicated nginx config
 ynh_add_nginx_config
@@ -150,6 +150,6 @@ fi
 # Restart services
 systemctl reload nginx
 systemctl reload postfix
-sudo service php* reload
-sudo yunohost app ssowatconf
+service php* reload
+yunohost app ssowatconf
  
diff --git a/scripts/remove b/scripts/remove
index 222a355..b771a21 100644
--- a/scripts/remove
+++ b/scripts/remove
@@ -4,27 +4,25 @@ source _common.sh
 source /usr/share/yunohost/helpers
 
 
-domain=$(ynh_app_setting_get $app domain)
 db_name=$(ynh_app_setting_get $app db_name)
 db_user==$db_name
-root_pwd=$(sudo cat /etc/yunohost/mysql)
 
 #remove php-geoip
 ynh_remove_app_dependencies
 #removing emailpoubelle database
 ynh_mysql_remove_db $db_user $db_name
 #removing emailpoubelle directory
-sudo rm -rf /var/www/emailpoubelle
+ynh_secure_remove /var/www/$app
 #removing nginx conf
-sudo rm -f /etc/nginx/conf.d/$domain.d/emailpoubelle.conf
+ynh_remove_nginx_config
 #removing aliases
-sudo sed -i "/devnull:\/dev\/null/d" /etc/aliases
-sudo newaliases
+sed -i "/devnull:\/dev\/null/d" /etc/aliases
+newaliases
 # Remove hook for postfix conf
 ynh_secure_remove "/usr/share/yunohost/hooks/conf_regen/98-postfix_emailpoubelle"
 
 #remove cronjob
-sudo rm -f /etc/cron.d/emailpoubelle
+rm -f /etc/cron.d/emailpoubelle
 yunohost service regen-conf postfix
-sudo service nginx reload
-sudo yunohost app ssowatconf
+service nginx reload
+yunohost app ssowatconf
diff --git a/scripts/restore b/scripts/restore
index 10e4a46..22673fa 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -96,7 +96,7 @@ ynh_restore_file "/etc/cron.d/$app"
 #=================================================
 # RELOAD NGINX & ALIASES
 #=================================================
-sudo newaliases
+newaliases
 systemctl reload nginx
 systemctl restart php7.0-fpm
 systemctl reload postfix
diff --git a/scripts/upgrade b/scripts/upgrade
index b92f2b2..07d5fbe 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -126,4 +126,4 @@ chown -R www-data:www-data $final_path
 systemctl restart php7.0-fpm 
 systemctl reload nginx
 systemctl reload postfix
-sudo yunohost app ssowatconf
+yunohost app ssowatconf