bchris21

Hello again.

Issue was fixed:

While migrating database from Joomla to WordPress, the AUTO_INCREMENT and INDEX were not transfered, so i had to manually add them via phpmyadmin.

Before enabling AUTO_INCREMENT from wp_users table you first have to set ID column as INDEX.

Now every new user is correctly incremented and now appearing in the user list. Before that all new users were assigned with ID=0 and where invisible in backend.

This article has helped me a lot:
https://wordpress.stackexchange.com/questions/225641/wordpress-database-lost-auto-increment

Thanks

Chris