Ultimate Facebook - Widget works, Facebook Connect Doesnt

Hi everyone - hopefully you can help me figure these two things.

www,videomantis.com/register

I am having problems with the "register with Facebook" button in the subscription form short code. It doesn't seem to be completing the registration process. Instead, it just dumps people back onto the register page - and I didn't receive an e-mail either.

However, if you use the Facebook Connect (Log Into Facebook) Button in the footer, it works perfectly. Can we either fix the register with Facebook button, or replace it with the log in with Facebook button?

Finally, how do I redirect the Facebook connect to go to the activity page for the user as soon as they are logged in.

Thanks for the help!