This extension has stopped being useful. Airtable made changes to their API that prevent attachment URLs from working after a few hours. Check this article for more information.
The URLs for Airtable attachments are temporary and expire after a certain period. As a result, Airtable generates a new URL for the attachment when the previous URL expires. This extension allows you to create a persistent URL that is always functional, allowing you to avoid the hassle of updating the URLs frequently.