You can use the Completed PDF endpoint to retrieve the final completed file.
In most cases, the final file will take a few seconds to generate. If you attempt to retrieve this file before it's ready, you'll receive a 400 response and message. You can wait a few seconds to ensure that the file is there, or use our Webhooks to get notified when the document has been completed.
Document PDF settings like whether to show the audit page and document ID can be changed on your Settings -> Account page.