i'm pretty sure it's not legal, but what can you expect from a casino that's operating without a license and is incorporated in a country that doesn't regulate gambling?
Betpanda have a gambling license. Their license company is located in Costa Rica, but they are licensed under Anjouan. They don't have a validator link available on the site, you can check it from their sister casino
Casinopunkz.
This is the only thing OP can do now. Although it won't really matter there. A flag could be more effective here. Unfortunately, OP won't be able to create a flag as the decision was made according to the terms. Still, everyone will address the steps (terms) of Betpanda as shabby.