Depending how and when the verification was approved in some cases like this, the casino may have approved the verification based on the document presented, but the location of the gambler is a restricted one this can be the cause of the lock of the account in some cases, and to get that resolved the player must go back to the country of origin and write to sulpyfor some consideration depending.
This is a new case for me, and I don't imagine someone submitting verification and then suddenly being in another country moments later. Or maybe I misinterpreted your explanation. More likely, the casino would reject or delay the verification approval.
If you're referring to a freeze on a verified account, I've already explained that VPNs are useful for preventing this.