Hi Judy,
When referring to "download page url" is this the Download URL which you set up on the Product Setup screen? When the Download URL is configured for the Product, the download button will show up on the Confirmation page after successful purchase next to the product in the order details. The download button is also available to the user in the My Accounts module for downloading after purchase and if enabled, can be sent in the User Email Confirmation as well. In order for the download link to be displayed you have to have a completed transaction with a payment status of Approved and an Auth code. You can sign for an authorize.net test account at the following link, once you have your test account you will not be required to process transactions in your store with Test Mode. https://developer.authorize.net/testa...
Thanks,