How come it won't let my uncle sign in to facebook on my laptop?

[math]

My uncle told me to enter it he told me the email and password I kept entering the thing but it won't let me. It will let me, my sister Jaimarie, my dad, my mom, and my uncle's girlfriend

[Andrew]

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[Nervana]

It must be because one of these reasons:

1- You were given a wrong password.
2- You used CAPS lock the wrong way while entering.
3- There's a temporary error with his profile. It should be fixed in a couple of hours automatically.
4- It's hacked.

You can report the hacking (if that's the case) using another facebook account [Log in, open the Help Center then click a link on the right hand-side that says "is your profile hacked?" or something of that sort).

I hope I helped.