E-commerce site stuck on "TEST MODE"

Hi, when my users try to purchase an item, after the page where they type the credit card number, they get this error: (TESTMODE) This account has not been given the permission(s) required for this request. Yet, when I go to admin/store/settings/authorize_net, test mode is disabled. Also, when I go to admin/store/settings/payment, payment testing is unchecked. Just to make 100% sure, I checked the database table variable and 'authorize_net_debug' field is 's:1:"0";', and 'payment_testing' field is 'i:0;' -- therefore, drupal knows I should not be in testing mode.

This cannot be a drupal user access error, can it? I did not see any option in the user access section.

I did a string seach for the error in the source code, and couldn't find it, so that makes me think it is an error message returned by authorize.net. I was legitimately testing the account earlier, but now I'm ready to go live except for this! Does this mean my authorize.net account is still in testing and I have to contact them to get out of test mode?

Thanks!!!
--Benjamin