Not really, a shadow ban is suppoed to be so no one else knows you are banned.
no? what good would that do lol
the point is that you don't know you're banned, and it seems like you aren't
it's obvious that OP isn't shadow banned because it's showing him errors. if he were, he'd be able to "post" just fine, and even see the posts. but nobody else would see them
the idea is that you will just think you're being ignored, and eventually leave, without even thinking to try again with an alt