If it’s not too late to adjust the rules, I suggest explicitly stating in the Rules something like: “If a player misses 3 consecutive rounds and does not inform the judge, the player will be disqualified from the current tournament and banned from the next tournament.”
In the previous tournament on this same resource, there were 2 players who completely ignored the tournament, did not post once in the tournament thread about the reasons for their inability to play, not a single post – Eldar and Chernobog. In this tournament, I don’t see any (banned) offenders. And Cold Heart – was he just playing, like for practice? Or because the judge was a VIP? So, will each judge have their own list of banned players?