I have got exactly the same thing did you ever figure out what this was (demo account)? I also clearly have stated that I have no login sent videos of the whole app. I cant seem to get a clear answer from them.

I am in the same boat my app was removed without warning after being on the store since 2024 the reviewer citing 3.2(f) for a general update, which was to comply to new guidelines. I cant find my appeal anywhere, its like it was cast to the wind...