So you have 2 accounts? Isn't that a violation?
It is surely a violation on their ToS.
My account was banned even after completing KYC, a strange occurrence because usually if a player has passed KYC there will be no more problems with the casino account but duelbits is the opposite, that's why I no longer play here, I can register with a different email but I think there are still other casinos that can be used to play
I don't know reasons of your account ban after KYC completed but if after that you use another email to register another account, you will do a ToS violation. In addition, you will not be able to use 1 identity document to verify two accounts registered by two email addresses. If you use documents of another person to register a second account, it's another violation.
So I believe you did made good choice to leave and did not bother of creating a second account.