This caused me much grief! So I thought I’d share how I got it working.
If you need to create a webflow cms item with a dropbox file, the standard dropbox share links are not a direct link to the file. After creation of the dropbox file, I found I had to use a dropbox api call module to the [get_temporary_link] (HTTP - Developers - Dropbox) endpoint.
I also found I had to use a Webflow api call module to create the item. I originally tried to use the dropbox download file and the webflow create item modules with no luck.
Hmm. I did the first time I had this issue and didn’t get a solution. So many standard modules just don’t work in integromat. I am nearly at the point where I solely use api modules. But that’s ok whatever works!