Not entirely sure but when a casino is using a game provider then RTP and such things are not in casinos control. The provider adjust it depending on the game. The casino is only responsible to bring clients in their platform and let the clients to play. Bet history and everything else except customer management are done by the provider.
These days unless you are a big casino, you can not afford your own system. You are just using others API. I guess bet365 are big enough to have their own game engine and sports engine. I could be wrong.
What can a user do is trusted the platform, IMO providers should make some development progress in the future while they also created a device checker site from their side for users. So, any of these speculations can be gone.
How about some smart ass developers out there create the device instead? i personally feel that if the game providers develop the device required for checking RTP, what is the guarantee that they wont be accused of developing the device in a way it will favor them and their business?
Hey Stake guys, I just want to know one thing... Who's Kevin from finance? :/
From what i know about running casinos, i know that those who run gambling casinos, for their safety from angry losers maybe, prefer to remain anonymous, so I highly doubt that stake will tell you who kelvin is, I know kelvin as Kelvin on stake twitter, but I highly doubt if that is even his or her real name, I love most of his or her tweet through stake twitter though, i believe anyone would really want to know who he or she is in real life though.