Been using DropBox for a few years without issue.
Now when I share a link … users complain that they can’t access the file and instead get page to download DropBox.
For one off file sharing I would not 3d left to be forcing them to install app.
Here is sample link [personal information removed per the Community's Guidelines]
It brings user to window as in picture attached here:
(Can’t seem to be able to add a picture direct)
https://flic.kr/p/2qS6nGb