It appears this whole fuzz may just turn out to be a huge misconception/misunderstanding.
As we all know, This campaign happens to be the very first campaign to be managed by @cryptomus_com, we all know that managing a campaign isn't something anyone can do perfectly well, errors could occur along the way, which is very understandable.

If a participants was not paid, he should've first sent the CM a PM and if there's no response after a day or two, then he/she may go ahead to take the necessary steps.

I'm not saying it's wrong for the OP to bring up the topic and ask why he wasn't paid, all I'm saying is that, he should've first sent a PM to the CM which is the right thing to do and then wait for at least 24 to 48 hrs and if there's still no response, then he can raise an issue.