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VPN is make a confusion.
So, I not recommended to break any restrictions with VPN because can be used for broken their T&C. About currency, rather than reading the term & conditions just try to register and see inside of the casino.
Even casino can approved some VPN for only avoid restricted provider, but I still not dare to use it in case win a lot and some bad situation is happened and they used for that reason for my account.
Agreed, VPN is not recommended to bypass the country restriction by the casino but it is fine/safe enough to bypass the restriction by providers. I was actively playing in duelbits since the first day and I always use VPN when I want to play slot from some specific providers because I cant play it without VPN. At least I have never experienced any effect of using VPN so far although I have never made a huge win (max few thousands $ only).
Be careful, using a VPN is never recommended when dealing with a casino, most casinos forbid the use of a VPN to access their site, now what you are doing may seem harmless but maybe there is a reason why that game is not offered to people living where you are.
And if you happen to obtain profits to the point that a KYC verification may be in order or at least a more detailed research into your account is made, then they may realize that suddenly your IP changed from one country to another in a matter of minutes, so I would suggest that you do not do this anymore.