Moreover OP is there any KYC required in order to play , deposit or withdraw?
I suggest you to check their KYC Policy that you can read here
https://coinfolk.net/topic/474/kyc-policyIn short, you will be asked for KYC once your total deposit/withdraw exceed $1,000
And also curious to know about referral program if available in the site as in the OP, i was unable to find info about it.
Waiting for a reply.
There is affiliate program, there is a menu button on top left of the page (close to the tomato logo).
Click that menu and you'll see
https://prnt.sc/16m9g3k