Could you share your withdrawal experience? How much information did you have to provide to stake.com?
I don't advise VPN usage at all unless the casino permits it and if you have evidence showing that they allowed you to use it. Many sites usually use VPNs as a way to avoid paying out legit gamblers and Stake ain't no exception.
Also, the information that they ask for when discussing about VPN usage varies from person to person basically.