It is not easy for Bounty managers to predict scam. It is better to talk to Bounty manager ad make a solution by which you can contact team of ICO , if it is scam then take help of bounty manager and raise voice against ICO team.
Bounty managers should not be blamed since it is the projects itself that is not working. Projects are build together with feasibility study and all needed data to support it. But unfortunately there are some that will not succeed. I can say that it is a failed projects and not the bounty managers fault.