When you are using a decentralized noncustodial wallet, then even if you use VPN, there will be no problem. The problem only comes when you are using a centralized wallet or exchange and if that exchange has some locations as prohibited and if your VPN connects to that location, the service provider may feel that you are accessing from a banned location and therefore may restrict your account.
Does it give you access to your private keys, and seedphrase and let you export them? or does it require you to have an email, phone number, etc., and in some cases maybe to even verify your identity? If it's the former, then it's a non-custodial wallet.
You can also google the wallet name and find it is noncustodial or custodial wallet. Also, try to use a wallet which is Open Source (and not the closed source). Again google the wallet name for these pieces of information.