Hey mate, I’m not trying to defend the casino since I don’t have any info about them but according to your conversation with the support/owner, Your casino account is inactive for almost 5 years which means your account already expires. All casino nowadays have this kind of rule in their ToS that ranging from 6 months to 1 year inactivity before your account got restricted.

I think you have the right to claim those referrals that you earn when you are still active but the support has a valid point regarding your existing referrals since your account is already closed. You should read always the ToS so that you will be aware on the casino rules. I agree on the support because I knew exactly that kind of rules exist on any casino.