Mozilla is discontinuing the Persona authentication service as of 30 November 2016. If your site is using Persona, you will need to migrate those users to a different authentication method as they cannot log in anymore.
This plugin provides a basic option to change all Persona-based user accounts on your site to the Mahara "internal" authentication method.
Selecting "Yes" and saving this form will activate the migration script and do the following:
Note: Users will not receive any notification that their authentication method has changed. You may wish to put a message on your site's logged-out homepage to explain to former Persona users that they should use the "Forgot password" link and their Persona email address to set a new password and access their account.