https://kodi.wiki/view/Add-on:Dbmc_(Dropbox_add-on)

To use this addon you must perform the following:

1. Create a Dropbox app using this link (takes seconds): https://www.dropbox.com/developers/apps

2. Enable all your apps "Files and folders" permissions.

3. You will use the app key and app secret when registering an account in the addon.