Sorry for the trouble.
It looks like there is an issue. Activation emails are not sent. Sometimes they are sent. Most of the times are not sent. You may also not receive alerts of new replies. I am trying to identify the issue. It is probably web host related issue but chat support has refused to accept.
I have activated most of the accounts manually. Please try to log in.
If you have not receive Activation email or are unable to log in, please contact me via this page http://atheistzone.com/contact-page/