I dont know about this MDEX project or about their campaign, but if they claim that theyve paid their campaign participants where truly, none of the participants get their payment, then i believe they are nothing but cheater and such project should be highly avoided by everyone, but if they claim they paid and some did get the payment while others didnt get it, then guys should continue to pressure the team, they do find out what the issue is, but in the case where they refused to do anything about the issue, then probably, they didnt pay anyone and the whole is just a show and a scam, then the project should be avioded at all cost.