Character Problems

ok so i am haveing a small issue it just started happening randomly,
PPL arent allowed to create a char.
Seems like its not letting most of the user names that players are picking ive emptied the unlawful player table and still same issue any1 know any other way?

details..? like are they able to register? What comes up when they try to make a new character? Does is only effect a specifi Job lol.. Give all you can