I'm not sure the site would be a success, even if I did create dark mode, etc.
The game is too risky and the trust required is too high.
So it looks like it's time to end this project.
Sorry to hear that but I dont think it is related to the risk of the game and about too high trust. In my opinion it is more about the attractiveness of the game as your game is quite rare in the industry where not many people understand about the game and unfortunately it is not the current trend in the industry. If you are going to create another project in the future, it is better if you do more researches first to assure that the game you are going to launch is attractive enough.
You have a valid point about the demand for this game is not the high and also I just want emphasize that the main reason why many people don't want this kind of game because this type of game can be dominate by a single wale alone without any chance for a small players to win unless there's an option to limit who will gonna participate on each. Jack point is also true since this game is about escrowing all the players money for the prize pool, We can't deny the fact that this kind of game really needs a high level of trust to become succesful because it doesn't have license to operate and we didn't know anything about the owner. Only the open source code gives us some level of confidence to trust it but normal user will definitely not appreciate it because not all knew how to read and examine code.
@Jack good luck on your future venture on gambling industry.