problem with facebook connect

Hi,

Became a member today, signed up for Ultimate Facebook, which I'm now trying to install on this site of mine:

http://www.playry.com/

Apart from the fact that the facebook connect button is not placed correctly (should be above, not below), I'm experiencing problems using the 'login with facebook' feature. The problem is that I see a pop-up for a very short time and then it disappears, but log-in wasn't performed. No error message, I'm just not logged in.

Could you please verify functionality on this site mentioned above and advise?

Thanks,

Thys