app wont let me log in

If you can't sign into Facebook you need to contact Facebook support.

See:

How to contact an app developer - Apple Support

Good luck!

leesi.lulu Said:

"app wont let me log in: i can not log onto facebook app"

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App Password:

Try logging in using an App Password, rather than your regular password.

Go Here for More: How do I use app passwords? | Facebook Help Center