Yes this is my questions among all bounty hunters. In my 4 months on doing bounty i campaign i have promoted 2 ICO's already and the first one still counting the stakes and still working on the distribution of the tokens. Some had receive already and i thought about receiving too but until now no tokens found in my digital wallet even after searching it on etherscan if there are relatively made a transaction to my digital wallet address and there is none. I have gave my effort and quality time for them to promote their project that includes also the resources being used like internet connection fee and the electricity are all wasted for the project i guess. I think this could be my last project to promote and if i still will not get any rewards then quitting is an option.
I think doing a campaign is an investment, and you can get profit or not at all. But in your case, it looks like it will be solved with dev if the problem is you have not received the token while the other has received it. My advice is to talk to them, because a good developer will provide a place to complain and try to solve all problems.