Now I start to understand. You have chosen a quite complicated way with passwords, DMing etc. People don´t read anymore :(
Would also have been better, if the explanation would have been a bit more detailed and e.g. the people called out by name who are already qualified or suitable for a certain tournament - and who are not. People in the wrong tournament would then just get disqualified/not counted.
I would use the Lichess possibility of restriction of players to e.g. <2000 rating. At least that´s easy to implement, but of course not that specific.