Guest usernames not allowed

I have a problem. On my site, guests that want to advertise or affiliate can't due to their "username" being denied. I tried myself and it is not allowed. Could you help me as soon as possible?

Hi!

Administration Panel => General => Forum => Security => Security Administration => Unauthorize subscriptions made with the most commonly used spam usernames. : No.

Administration Panel => General => Forum => Security => Security Administration => Unauthorize subscriptions made with the most commonly used spam usernames. : No. Wink

Thank you, it worked.

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Glad I could help.