so maybe it's very natural that sometimes casinos review large withdrawals made by customers because the casino is also afraid that big wins or large amounts of money are obtained from fraud. so it's no wonder VPN use will always be a problem after a delayed withdrawal.
The thing is that casino allows the use of VPN just for various reason and is not as if von is a bad actor in casinos since it doesn't aid the player's winnings games unlike bots that does so, VPN is just to bypass restrictions in some regions and unless the player uses the VPN to violates the casino law only then they're seen as a threat like hiding under false locations to create multiple accounts which is against the rule of the casinos.