From what I read and found myself searching around betcoin.ag they are in deep trouble due to the way their software supplier did not honor a jackpot. They handled the situation, but rather poorly. There are also plenty other unresolved issues. Thus I think a warning was needed. I personally would not advertise for them and get out of a contract ASAP. Other people will come to their own conclusions and it can be different from my own. I will not add negative rating to participants for advertising the casino, but it will probably have a lasting impression on me. Not that I believe many care about that.
Where specifically is it stated that BetSoft has to honor the Jackpot?This guy, game-protect has put a negative feedback on all the signature campaign participants while low-key promoting his own website. See his sent feedback here.
Yes. Promoting a publicly proven scam for its own financial benefit is a criminal offense and I feel the obligation to warn existing and potential customers about that behaviour. 
The reference goes to his scammy website. Funny because after all these battles in the said scam accusation, we'll get a negative trust from a scammer. 
Why and how is Game Protect scammy?Who did Game Protect scam and how much is the damage?