A Connection to dropbox is no longer required, as artwork is saved within MagManager.
At the very top right of the screen, you will see a Dropbox icon. If you haven’t yet connected to Dropbox, this icon will be red. Click on this red Dropbox icon
You will see the following:
When you click on "Connect to Dropbox", MagManager will be connected to the Dropbox account you are currently logged in to. If you aren't currently logged in, you will be prompted to do so.