project developers behaved very ugly towards the people who helped them. With this act they have spoiled their reputation. Now, no self-respecting investor will pay attention to this project.
That simply shows the level at which the bounty space is even being abused by project owners and one of the reasons why something should be done about it. Sure, in most of the rules like someone stated it out, the bounty manager and the team reserve their right to make changes to the terms in any moment, but I believe it is an absurd thing to really end up denying people what they actually deserve in the first place.
This is not actually a project I would want to be investing in anyway, asides all these, there is a huge red flag and it just shows that bounty participants always tend not to do their research before joining a bounty.