Facebook Problem(S)

[ImLostAgain]

I seem to have lost the ability to post comments on facebook. I can write my comment but the post button has dissappeared.
It was suggested to me that I uninstall f/b and re-install it. Trouble with that is, I can't find it!!
I looked for it using revo uninstaller but it wasn't listed. I tried 'all settings' then 'system' then 'apps & features' but again f/b is not listed! I've left clicked on the windows button and again it is not there.
I tried to send a comment using my mobile phone. Still no post button!!
I'm using windows 10 and have tried three different browsers ie firefox, opera and pale moon.
I've now run out of ideas.
Anyone know of anything else I could try?

[SlackAlice]

Facebook isn't a program installed on your pc. It's just a web page shown on your internet browser. Make sure you are signed in before posting comments.

[ImLostAgain]

Ok, thanks SlackAlice. I am though signed in.

[ummmm]

Sign out and close it. Then restart it.

[ImLostAgain]

ummmm, I did that but there is still no post button. I tried pressing enter to no avail.

[ichkeria]

Is this comments on anything or to specific users or groups/pages?
Can you post status updates?

[ImLostAgain]

Comments on anything.

[EdmundD]

Have you tried typing a comment and then pressing the Enter key?

[ImLostAgain]

Yes as I said at 10.27 EdmundD but thanks for taking an interest.

[Gizmonster]

Maybe you're on a temporary ban??
Have you posted anything recently that may be deemed as slightly offensive, etc??