Thread:Project:Support desk/Still getting User spam even after disabling registration/reply (7)

Extension:User Merge and Delete won't work for this since it renames/deletes user accounts, not userpages with unexisting user account,

To stop new spam userpage creation, you can apply some of the options listed in Manual:Preventing access, from restricting page editing on the User: namespace for unregistered users, or restricting edits on all pages for unregistered users and force them to create an account (with Extension:ConfirmAccount). Extension:AbuseFilter can also be helpful preventing those edits, but you should learn how to create a filter for that kind of edits.