why all upcoming and new projects doing scams with bounty hunters for example P2P and YOUengine when bounty distribution is near they dump the token price and fail all hardwork of bounty hunters who help promote their projects many weeks after this promoters get nothing.
Actually this kind of issues in bounty scene exist for long times and it's a total gamble for bounty hunters right now to join on several campaigns, maybe the best thing you can do for now is to be selective and be accept the fact that almost all of the time that will happen when bounty distribution happen.
That's the reason why I left bounty campaigns for almost 3 years, since the scamming is so rampant and it's a waste of effort to join them.
Indeed, you gotta take your time in researching the campaign/project before participating because more or less if you didn't do it there's a high percentage that you will end up in scam projects and wasting your time. You know what luck is also mattered in choosing a bounty campaign because they might perform a good service in the early stage but after the allocation, there's a lot of problems occur leaving the coin hopeless. And this also the reason why I only barely participated in bounty campaigns. This is just based on my experience maybe yours is different but you must still be wary.