Hi, I will assist,I'm sorry about your iPad issue. Have you tried to reboot/restart the iPad yet: Please press and hold both the Power button and the Home buttons together for at least 10 seconds, until the Apple logo appears, then wait a bit, then check.
If it does not work, can you uninstall facebook app, then redownload it?If all fails, please reply, so I can help further.
Edit: It looks like you've gone away; please reply back when you are available to continue. Thank you