LCB ruled in casino's favor...
I'm not siding with Rainbet, just passing along their decision.
The casino representative has provided us with proof identifying a duplicate account. As stated in their Terms & Conditions:
5.4. You are only allowed to register one account with the Service. Accounts are subject to immediate closure if it is found that you have multiple accounts registered with us.
Since this involved a violation of the casino’s T&C, there is unfortunately nothing further we can do, and case #4369 will be considered RESOLVED on our end.