Facebook complaint: You can’t use this feature right now error

I have repeatedly BEGGED Facebook to fix this, to no avail.

I am NOT a spammer. I am a private user, and occasional poster of online articles I’ve written that I want to promote to my friends or followers. I have been repeatedly blocked from using various Facebook features, most egregiously the post-to-group function. The popup always tells me:

You Can’t Post in Groups Right Now | To prevent any misuse, we’ve temporarily restricted your ability to use this feature on Facebook. You can try again later.

But it happens with other features as well, only not quite as frequently as the above.

The latest glitch(?) occurred about 2 weeks ago with no return to normalcy. There’s been no known complaint against me from other users; no warnings from Facebook re. spamming or any other abuse of my account.

WHY IS THIS CONTINUING????????????