Help [Help] Facebook app ain't working right

[poophead156]

Hi,

I've got a big problem with Facebook app.
I can't post anything, comment, like it etc.
When I look at the things my friends post, I can't scroll down to load older post.
Then it shows a a circle moving left above and at bottom. (Which shows too when I try to post something)

I've tried to remove all the updates and update it again but no luck so far.
I don't know how to reinstall facebook because I can't remove it.

Thanks in advance,

Poophead156