There is currently something wrong with the registration so nobody is able to be registered at the current moment. Please bear with us while we try to fix this problem. Thanks
-The Baka-Updates Staff
I am glad to say Manick has fixed the problem and everything is good to go again. If you have tried to register in the last 3-4 days and did not get approved, try it again. If it says the email is already used, try using a different email.