"This request looks like it might be automated. To protect our users from spam and other malicious activity, we can't complete this action right now. Please try again later."
...when I try to make a post. Then they want me to provide a mobile phone number so they can text a "confirmation code" to prove it's ME! Guess I won't be posting there until (or IF) I stop getting that message!
UPDATE(6:53pm): Fixed it by logging out and logging back in.