I check the site and the first thing that turn me off is the UX/UI design but I want you to know that what most gamblers care about the most is the casino been mobile friend, good/attractive UX/UI design, good customer support, game result fairness, good bankroll, scalable altcoin added among payment method, fast withdrawal, and deposit.

Yes, the site is just a sample site and the OP wants the community's help so they can know the area to develop so that th casino will meet up with the needed standard.