I see you are brand new on this forum, and this is your first post on this forum as well as this thread, sorry though but you can't get help here either, freebitco is currently facing issues with alot of customers and their representatives on this forum are no where to be found for several weeks or months now, the casino seems to be currently running on auto-pilot because there are no customer service any where to assist users with their issues, both on the site and on this forum.

So, what I advice is, if you don't have a balance on your FB account, simply forget about this and move on, find some other reputable casino and play there for now.
But if you have a balance, there is also nothing you or anyone can do for now if you can't access your account, simply continue to try and let's hope that the management behind this casino will break out of their shell soon.