ColdRain
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The organizer has the right to refuse any participant without giving a reason. If the tournament organizer believes that a participant will cause problems during the tournament, they have the right to exclude them.
What kind of problems? I have problems with specific people – with those who get easily offended :) and not with discipline.
It's much simpler here; someone's ego is hurt – it's just a simple offense, not a problem for the tournament.