if you are finding Problem while login with facebook mean your facebook account has been disabled or anyother problem .
you can do simple steps below.
1 - Open Silebook
2 - Now click on forgot password button
3 - Now you have to Enter your Email and click on Request new Password Button.
Now you will receive an email
click on link you received through email .
Now enter Your Password in the Boxes.
and click on Reset Password .
Now you will be logged in To SileBook