Do you have any type of restriction in terms of which country is only allowed to use your platform? Or it doesn't matter where you're IP is coming from?
At least, if you are too worry about breaking the law, you can use a VPN when you play those games. I think it's about how the ISP in our country will block or allow us to access all the websites.
VPN is not good idea for account which can have same used IP by someone else and this can be considered as abusing promotions with multiple accounts. Using fiat currency can be a problem due to accepted general rules regarding KYC&AML. I am not able to find concrete information about KYC, limits,restricted countries.