Unfortunately these newbie bounty managers are not very reliable and often end up scamming or disappearing without explanation. I made the same mistake when I was lower rank of joining a bounty managed by a newbie without an established reputation. I wasted a month of my time only to end up not receiving payment. Forum users should beware of newbie managers and only join bounties managed by people with a high level of trust.
I doubt that these newbie bounty manager accounts are really operated by beginners.
The Bounty Manager account, called OP, only posts related to the projects being handled. Even though they are online quite regularly, there are no discussions regarding projects or posts on other boards that support the bounty manager's career and reputation on the forum.
I assume the newbie account with the Cooper member who is the bounty manager is operated by someone who is used to doing this. This is just an assumption, there is no incriminating evidence yet. but from what the bounty manager does and the attitude of the bounty manager. clearly shows unprofessionalism.