Well they rather don't like those who bet on sports, but I assure you it was a normal bet, I made money on cyber sports, what other collusion, I don't understand. yes I use vpn, nothing else.
Now you should check if 1win allows VPN usage. If they do not allow VPN usage, then I assume you got fucked already. I don't know if they cooperate with the mediator services like casino.guru, but you can try contacting 1win first and then contact a mediator service like casino.guru. I actually hate when casinos suspend accounts without telling the exact reason. But we have to understand that they are running a business here. win is kind of aggressive with their marketing and I do believe they have enough money not to scam people.