It is interesting that in 2019 (almost 2020) people still think that casinos have any power over who wins or who loses in a provably fair system. How could anyone believe that a website could "flip the switch" and make you lose? How is it ever possible?
If someone provides me one fraction of a proof that primedice could make you lose when they want I can totally join your ranks and claim primedice as a scam website and write it everywhere I can find. However you can't, nobody can, the absolute best you can do is just say "they are scam" and provide no proof or no paperwork no traces of it at all. The only thing you can provide is that you lost, and that makes you angry and that is why you think they scammed you because otherwise how could you be gambling and losing, it is impossible! lol.
There actually are a few casinos that do try and cheat the provably fair system. One site that comes to mind is that 999dice site. From what I can remember they don't show you the provably fair data unless you access it. So its possible that they just would scam some people who they know never looked at their seeds. And since the user has no idea what their server, client seed was then they have no way of verifying their bets. Some said it wasn't intentional, some said it was. Either way that site has very bad red trust as a result of it.
Another issue with provably fair can be if the client seed is generated on the casinos end. Usually its suppose to be some random string generated by the browser, however it can be actually some predetermined string which might be able to cheat you if you have predictable betting habits like doing something like martingaling.
Either way, I am sure when someone gets like 10 losses in a row, right after they started to up their base bet, they will feel cheated. However usually its just a case of bad luck and you can easily verify bu manually checking the rolls.
