No VPN.
No multiple accounts.
Willing to submit KYC.
If all gamblers follow what I mentioned above, I'm sure this will remove many complaints against casinos.
But i think sometimes people having multiple account not because they want to cheat the casinos because some people has been forgot their password and email to register and usually they created new account with using new email but indeed the casinos don't want to know about this reason because having more than 1 account is against their rules
Forgot for having an old account means it already happened for a long time and now you come back, you might already use a different ISP provider, different device or move to different location. In this case, the casino may likely not aware if you have an old account.