YOU NEED TO CONTACT THE BOUNTY MANAGER! NOT US!
I share the same experience too. It seems that the bounty distribution has not been properly distributed and maybe the team can also contact the bounty manager and let him explain why it happened because the bounty rules and terms are clear as ice yet it was not implemented fully. I'm afraid this will have a negative impact to the project if it will not be resolve asap.
I agree with you, if you contract a duty to a bounty manager, it is still your responsibility to ensure that the contract was carried out appropriately and tokens distributed to the supporters. This has a negative effect, and create a bad image of your project too.