Maybe I am incorrect, but I interpret erWin ID as your erWin user ID. So erWin knows that user has paid, so VWGoa can contact you with next steps as stated in the pop up menu provided below.
"We are experiencing issues with our credit card payment provider for erWin Service Information and ODIS Diagnostic subscriptions.
The purchasing process for erWin and ODIS Subscriptions will change on Monday September 21st, and could last through the end of the year.
To make a purchase, go through the normal process on erWin, but during checkout you will be directed to a 3rd party website to complete your payment. Once complete, VWGoA will contact you within 1 business day with your next steps.
Please expect a 1 business day delay in processing from the time you place your order. If the purchase is made after normal business hours (7AM-4PM ET and weekends), the subscription may not be available until the next business day. We apologize for this inconvenience. If you have questions, please email
techinfo@vw.com"