Can't log in to Facebook – Jungle Jewels HD Review

When I try to log in to Facebook, the login screen pops up, but the keyboard won't stay open long enough for me to type even a single letter. Therefore, I can't get logged in. VERY disappointing, especially since I PAID for this app (unlike Bejeweled Blitz, which was FREE).
Review by Jejily1 on Jungle Jewels HD.