Summer-Autumn-Winter Tournament for fans of Heroes 4.

Well, that's surprising. Are you sure he was cheating?
Because that's a serious violation.
If it's confirmed, I think his participation in tournaments will be over completely.
P.S. How shameful!

Added 2 minutes later
Regarding the tournament system, I suggest replacing the players who have dropped out with those who want to play. For example, Basoon.

There's a saying: I'd gladly go to heaven, but my sins won't let me! Unfortunately, I can't help you with the tournament! But the tournament system should have been made the same way as the previous tournament (didn't play - lost, cheated - lost, and no breaking the tournament). But since it happened, I suggest doing this: consider the previous game of the violator as valid (maybe he played honestly then), and consider all subsequent games as a loss. As a result, he won't advance from the group, and the tournament system won't be disrupted!