It worked just fine before, but know I do not know what is triggering the problem. The problem is that when I press fb connect button it doesnt ask for permission, the facebook user thumbnail and username do not come up either. Actually it works on my personal facebook account, its really weird. After investigating username in the admin panel the only difference is that my personal facebook user that works got username: fb603759298 and all others (that did not work) got usernames like fb100001531627946 fb100002673198168 and etc.
feel free to login for testing purposes http://techgeek.lt/?p=258 as I will delete all the attempts afterwards.