Hello,
I'm using Authorize.net as my gateway for S2member Pro and for some reason when I tested it in Sandbox everything went fine.
I put in my live API credentials and generated the pro form for Authorize.net. When I use Credit Card to signup, I'm getting an Error 33: Customer ID Required
There is no field for the customer ID. I only ask for name, email, username, home address, and billing info... That's it!
Has anyone ever received this error? Is it something with the S2 Member plugin or do you think it might be Authorize.net. Please let me know because we're live and I guess this is the main reason why we haven't seen any subscriptions...