Good luck getting any support for that flag, any rational person would evaluate the accusation in its full context not just the part that says "Royse777 did not pay me"
There is no flag, as far as I can see.
But seriously, who wants to be on OFAC list for a hundred dollars or so?
No one. The fact that no one from his campaign has protested demanding that he be paid is significant. If I were the OP I would simply lock the thread because leaving him open looks like it will only garner more opinions against him.