I have a Dropbox account with 2.75 GB of storage that I previously had set up on my desktop Mac. Now I have a new computer and can't see any of the Dropbox files or folders. I can still see them from my phone, so I know they exist. I tried using the Connect a Computer tool from Dropbox on my phone, but nothing changed. The Dropbox folder on my computer is empty and the Dropbox icon on the menu bar doesn't show anything either. How do I reconnect this new computer to my Dropbox account with the files and folders?