Gambling website with credit card payment option? Are you sure what actually you are looking for? I remember that some ranking thread in gambling board is ignoring such gambling houses which are also accepting fiats for gambling bankroll purposes as they will kill your anonymity feature. Also, scammers will complain for chargeback which will lead to get bankrupted over the time. I could not remember where I had played lastly with a credit card functionality to fund my gambling account.

If you are building a gambling house for this community then definitely you do not need to have credit card option. Also, when you have credit cards as part of your payment option then also this community may ignore your houses for privacy reasons. You are into a crypto forum and make sure for whom you are building a gambling website.