I understand where you’re coming from, but anecdotally the same thing happened to me except I have less clarity on why and no refund. I got an email back saying my appeal was rejected with no recourse. I was paying for max and using it for multiple projects, no other thing stands out to me as a cause for getting blocked. Guess you’ll have to take my word for it to, it’s hard to prove the non-existence of definitely-problematic prompts.