If you take a compensation (in this case a bug bounty), you are legally entitled to nothing.
This is my
current opinion on bugs and compensations and we can leave it at that.
Of course it is... Considering it is the exact opposite response you would and have had if/when you weren't wearing their signature. Funny how your ethics depend on whether or not you're paid by the offender. Your word is meaningless and your opinions clouded by greed. This is yet another example of why you belong nowhere near any sort of position of trust.