Can't Login To Facebook After Not Using iPad For A Long Time

I reset and never used my iPad for 2 years since my iPad Air 1 screen is broken and moving by its own and I installed facebook and messenger now can't no longer log in. It says "Login Failed" Sorry, an unexpected error occurred. Please try again later. Error code: 100. (I have an iPad Air 1st Gen)

I can log in to Facebook if I do it through the browser on my phone and I can log in on my PC as well.

I have tried turning my phone off and then on again, I have deleted the FB app and reinstalled it. I changed my password. Nothing is working. I went into settings, then the Facebook app and I don't see anything in there that will help the situation.

Of course it is impossible to contact anyone at Facebook for help. Does anyone in here have any ideas?