I hope this issue will not be a debate anymore, the problem is clear and the solution is available well the decision is up to you if you are in this situation. Indeed, it would be better for casino to provide manual verification to avoid other problems. I personally chose to continue by taking a screenshot from the support team as one of the evidences.
It's good to hear from you that solution has been provided on your account regard to the KYC requirements. Since you've been told to skip level 2 KYC I Don't think there is anything to be worried about besides casinos look forward to giving their customers the best user experience possible and I trust Rainbet to do likewise. All my years making use of casinos, the little problem I encountered where all properly taken care of, so I expect to hear same result from you in the future.