My Facebook app won't open on my iPhone 4 what should I do?

It just won't open, I re-installed like 3 times already and nothing! It was working perfectly fine and then it got slow so I updated it and now won't open. What should I do?

Delete the app. Turn off you iphone. Wait 2 mins. Turn it back on. Reinstall fb. It should work after that

Giv me your email or number phone or msg i ant kiss your body

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