"You do not have persmissions to take this quiz" message appears when non-registered user try to get access to a quiz which is available only for registered users. You can modify the error message and a link to a registration page. You can read how to modify messages by the link which we provided in our previous post (it can be done with help of "Localise" extension or you can edit language INI file manually, if you send a link to a registration page and a temporary access to your J! backend by
email, we can modify it for you).
Regards,
ARI Soft