Capture information + Track downloads

I have a client that wants to track the downloads of files and have them hidden behind a signup form gate. However, they want them to only have to fill out the info capture once and then access and still track the download of what file they are interested in.

Trying to solve it with Webflow forms and Mailchimp and seem to have to initiate the data capture for each file.

Here is my public share link: LINK
(how to access public share link)