Welcome to the Community, @my_computerguy.
I understand you need the code when connecting Amazon to QuickBooks Self-Employed.
I recommend contacting Intuit Developer team. They are the ones who can help you with your concerns about third-party applications. You can click this link, and you will be routed to them: Intuit Developer.
I'm adding these articles to help you manage integrations with Amazon and QuickBooks Self-Employed:
Let me know if you have questions about Amazon integrations with QuickBooks Self-Employed. I'm always here to help. Have a great day.