Exactly! Ask support whether the use of VPN is allowed or not if YES then keep the evidence, sometimes problems in the middle of the road always exist and when asking again it is a different opinion from support maybe with that evidence we can be strong with the defense.
It’s better to check it for yourself in ToS of the casino in addition to asking the support to guarantee that you are following the casino rules without relying on support alone since they often commit mistakes sometimes while casino sometimes have problem validating whether their support really said that or not because they can accuse you of using photoshop if your evidence is just picture while casino denies your claim.
Better to do it yourself since it’s your money, using the find in page function on browser to easily locate the VPN part is very easy to do.