Registering with a wordpress site

I’ve been trying to register as a user for a site for about an hour now. The problem arises when I enter the Validation code, which I put in correctly, but it comes back as an error everytime. Does anyone have a solution for this? Below is the link to the site I would like to register with.

Thanks a bunch!

http://www.singleblackmale.net/wp-login.php?action=register