Cant log in to my facebook on Windows Phone...?

[Sup]

So i just got this Nokia Lumia 525 and this phone already has the facebook app. the first time ii logged in it was fine. after,a few,days later, it wouldnt let me. it'll say "Verify your account on Facebook.com" or "Oops. Something went wrong with your account. Check your account info and try again"
i am almost positive that iv entered all the posibilities of passwords i use to log in. Someone help!

P.S: got this phone overseas.

[Carling]

Do you know what I would do, take it back to where I bought is from and exchange it for an Android phone. at leased with that you will beable to do what you want to do with it, and not be controlled into what M$ makes you do,