So I'm managing a non-profit sky survey project and have used Dropbox to sync our data to a large secondary hard drive on a Dell workstation (windows 10 pro). This has worked flawlessly for the past 6.5 years. Suddenly yesterday morning, the computer booted windows with some message that Dropbox can no longer sync with the folder and renamed it "(old)" and supposedly rebuilt the folders elsewhere (to a drive too small to host all the files), and now no longer syncs my data to the original synced folder. We are talking 4.29 terrabytes of data. How can I restore dropbox's link to the folder? Right now, the windows tray icon lets me open the dropbox folders directly, but it is important that the **bleep** program automatically downloads the data each day. We use a large business account with 10 TB of storage.
