It def does as I was in Y7 after playing since day 1 (and using GG to edit my energy to millions) that I got banned. They said it was impossible to have that much energy when queried. I guess it was. I used to play in every event without issue but would always only win by a bit or come in #2. I think the first 2-3 years of HPHM was the heyday without fear of bans but now JC is actively looking for reasons to ban people 24/7 like the DMK game does. Such a waste of time for me. I've never restarted and always held out hope that something in my save could be edited to unban me. Maybe a unique ID or something. <shrug>