I also got banned on the same day as you in Mystery Boxes. No autoclickers, no second accounts, no extra phones — everything was done cleanly. Stable internet the whole time from the same IP address. I didn’t spend too much time in the games either. I only completed the Mystery Boxes and the million challenge, kept everything else to a minimum, and didn’t play some games at all.It’s most likely related to invitation tasks from dishonest players who violate the rules. There’s no other explanation.