I don't know what TurboTax's reasoning is. My own view is that you didn't buy the product from TurboTax and you didn't get the authorization code from TurboTax. Your issue is with the seller, which is Costco. TurboTax might be willing to help you out, but you are looking for an automated path for the situation, and that path does not exist. As I said earlier, call TurboTax customer service and see if they will help you. But if they are willing to do anything for you, it will be a person to person interaction on the phone, not an automated online solution. They are just not set up to routinely handle issues with third-party sellers.
