Mass Change User Role

No ideas?

have you tried this plugin:https://www.dagondesign.com/articles/import-users-plugin-for-wordpress/

Maybe that is not a good plugin for you because that one is for new users. but maybe this plugin will help you: https://www.ads-software.com/extend/plugins/user-role-editor/

Do you have access to MySQL? I had to migrate 1,000+ users from a legacy website.

In the wp_usermeta table there are several rows for each user one of which is wp_capabilities

I added a new user via admin to get the default settings for a subscriber, and the entry is a:1:{s:10:”subscriber”;s:1:”1″;}

I then added/updated the values for all the users to this to make them all subscribers.

You’ll need a bit of SQL know-how…

And… backup your database before doing anything via MySQL!!!!

I did it via MySQL. Not a very good way, but it worked =]