I am one of the participants of this project campaign (twitter, facebook, medium and reddit). Of all the tasks I did, they did not pay anything to me. BAD BOUNTY CAMPAIGN !.
Sad to hear it. I think not only you, besides you are still a lot of unpaid REDBUX campaign participants. Only a few people and that too with very little rewards. Skip this project bro, because there are still many other projects that are better than this scam project.