Thanks for reporting this. Does your error look similar to the one posted here?
http://www.chess.com/forum/view/help-support/login-problem3
Will you let me know what you've tried so far? (Have you tried uninstalling and re-installing your FB and/or Chess.com apps?)
Hallo
Login in with facebok gives just "Invalid ket hash..." error and thats all. From PC/MAC i can login and play without issues :/
How to solve it?
P.S.
Tryed to play on facebook...
"
Error
Sorry, the application you were using is misconfigured. Please try again later."