We have been dealing with a hacker for the last while and while admin is not around atm, Harold and I have only been able to delete his account whenever he shows up.
I have resorted to changing the human verification setting to question and answer. The question informs the user that we are dealing with a hacker and that new registrations are being blocked for the time being.
We will hopefully resolve the issue in due time and will restore new registrations as soon as we can.
Thanks for your patience and continued support.
KALSTER