Aside from giving you the chance to choose any country of your choice - a paid VPN still helps in terms of IP, if you're using a free VPN you'll be given a different IP address each time you turn on your VPN but in this case of paid you Mk might be granted access to use the same IP address continuously and that's the major reason people that wants to cheat in casinos that do not allow multiple accounts always go for paid since there will be less change in their IP address which will also reduce the suspicion towards their account.