File viewing but not downloading

Right click on the folder, and 'get shareable link'(type: anyone can view). -> Open the link in a new Incognito Tab. -> Download the file you were trying to 

Most of your files are organised within the My Files app, however some files will not appear here. Some apps, such as Netflix, store their downloads securely on  Dropbox will keep your files safe and secure online and, at the same time, make them instantly available to view or download by anyone without the need to log in to the file owner's account. This may seem paradoxical, but it is not. Dropbox