Thanks Davood, I already use this plugin, but it hide bar for all user not only for customer. I was searching some kind of code that when I create a new user that set the checkbox? ‘toolbar’ in user profile toggled off. see here: https://www.dropbox.com/s/zrtvcy4sn3be00h/Schermata%202019-06-14%20alle%2008.10.37.png?dl=0
