They were hired to moderate the
DAGO project, and paid in advance (in token) to pay the participants to the bounty campaign, I'm arrived to their bitcointalk names through their telegram names from the telegram dago channel
https://t.me/DAGOMiningofficialOk, you might want to change "moderators" to "bounty managers" because now it sounds like you're accusing forum staff of something.
As for the actual accusation, you should support it with screenshots and payment TX IDs. At least one of the users already has negative trust, another seems to be banned.