It seems that they (Rainbet) are very happy with the marketing promoted by Hhampuz, interesting, I remember when Rainbet started with its marketing on the forum, now they're becoming significant in this community, I don't know the casino, but I know that they are probably reaping great results with the campaign, to the point of expanding the campaign even more.
I prefer the way their campaign make expansion slowly but sure rather than huge expansion at one time and then remove the users who're part of huge expansion, moreover the old participants also get removed because they want to deduct the participants.
I think they should prioritizing high rank users because few campaigns that stopped are participated by high rank users.