Ok, have now read all the comments, and luckily almost everything relevant has been said already, so I'm not going to repeat it. Still I want to answer some of the posts.
save your time, I think he finally understand it and it was his mistakes that he lost and he wanted to share his experience, he doesnt even know about provably fair, but it seems like now he do and he will stop posting about this
This might be the best comment made so far. Thank you also for defending my position while I was away. I basically support everything you said.
Should not have given him anything. You are a reputable enough casino and people were standing up for you. All you had to do was stand up for yourself as well, but now you've shown that all people have to do is bitch after they lose and call you scam and you'll give their money back. This is gambling. The site is provably fair. They don't get a penny back!
Hey Droganson, thanks for your comment. Sorry to have missed it previously (thanks to MarkMJ for pointing that out). I guess you are right, I was trying to be too nice. I can say for the future that
nobody will ever get a refund for accusing us. The reason I gave MarkMJ a refund was not because of the accusations, but because his first loosing streak (the one before the refund) was really quite brutal. To be clear: it was 100% fair, every single bet can be verified. But sometimes a loosing streak can just be very bad. We really try to treat all players well, evne if they get a bit emotional.
MarkMJ, I think we are both ready to let go of this topic. I think you had no bad intentions and can understand your anger after the loosing streak.
As Shulio has pointed out, I think the underlying issue might have to do with some misconceptions about the notions of provable fairness and house edge (had noticed that many people have issues with these concepts when reading a related discussion on Reddit). Will see if I can write up some blog posts to try to clarify.
One last point: So far I have been amazed by the people in this forum. The amount of support and high quality actionable advice I have received here is just amazing. Droganson's and Shulio's comments are great examples for this. I really appreciate the support and feedback and would really like to thank everybody for that.