If someone has blocked me, why doesn't YA simply say so, instead of some nonsense about the site having some "problem"?

Nobody from YA has cared enough to comment. That really sums it up, I think. They just don't care. Why do they bother to run this site if they won't do it professionally?

Yes, sometimes it obviously wasn't about being blocked. I too have seen the refusal message, but then my comment did appear. Makes it frustrating.

Of course, there are one or two people whose avatars are now familiar to me, and I can never post to their questions, so I've concluded they, for some reason, have blocked me. I guess I didn't agree with everything they said, thought or did in their entire life or whatever...