I updated my fb app on my Samsung 4 with play store and now I can not open fb because of error 400

[Shannon]

I'm able to open on chrome but then I can not play my games thru fb from there. How do I fix this. I have shut phone off and deleted several times. It leads fine it just won't let me log in from my galaxy 4

 

[Shannon1997]

Load I ment to wright my phone has mind of its own.