To find auto restart, go to search and type in auto restart, pick your days & time.
I've seen numerous posts about FB (personally, I don't use it).
Have you rebooted your phone into Maintenance mode and performed a "Clear Cache", reboot back to phone and try the FB app again?
i reported the issue through samsung members app, got reply from them saying they are working with facebook about the crash issue.
i hope they fix the issue on the next update