Ultimate Facebook and footer hiding the facebook registration

I have a problem with a theme and ultimate facebook.
When activating "register through facebook" wp-signup.php it seems to put the footer content over the facebook registration.

I tried to overide the setting in the wp-signup.php by html style
#menu-footer-menu{ display: none;}
#footernav { display: none; }
registration page...

It works on wp-signup.php but as soon as fb_registration_page is in the url
then it doesn't seem to remove footer content.
Am I missing something obvious?