Look at TOS or rules and agreement as you sign up to any casino. Check out that part if they've got something to tell about usage of VPN or any type of service because they'll surely detect you using one. But if it's based on my experience, I've done that to several casinos and they never hit me with a warning so I think that's fair enough and that's not a big issue to them unless there's some uncaught activities you do in your account that results to them losing money.
This is where people should really be focused on, on which they should really be checking out those terms and conditions before using up a VPN and just said that there are lots of withdrawals or locked up
funds due to this issue, if the house do finds out that you had bypassed or violate their terms then it would really be just normal that they would really be taking such step for you to be penalized.
Therefore. if you dont like to have some headaches then it would be ideal or better on checking out everything, if you cant see it on their tos then you could always ask their live
chat or support to clear up everything or doubts you do have.