Users can register on their own again. But we have now to approve posts of new users manually. I think this is the better solution as a lot of users register here without posting anything.
Moderate all content by users who have 10 [instead of 0] or fewer status level points, regardless of links in content (or set to 0 to ignore this rule).
Again set to Registration Moderation: [x] Disabled
The Domain grr.la is now also disabled for account creation. I thought it was in the long list. But somehow it is not complete - I have to update it again to contain all temporary or disposable email domains.