To ensure that you are not operating in Demo Mode, please completely remove any instance of demo=, demo=Y or input type=hidden name=demo value=Y.
The demo mode is also controlled by an account level setting inside of your 2Checkout account. Log into your account and access the “Look & Feel” settings and be sure you have not selected for all sales to be demo sales with the Account Demo Setting option.
When using the Demo feature for testing purposes, please be certain to clear the cookies in your browser between tests to ensure the new account settings have been applied. For more information on clearing the cookies please click here.
If you are still having problems after completing these checks, please submit a tech support ticket.