I'm on a free Dropbox Basic account. My storage breakdown shows 3.9 GB under Backup, but there is no active backup on my current PC, and the computer that originally created that backup no longer exists. The backed-up files do not appear anywhere in my file browser, and unlinking old devices (including several) does not release the space. This 3.9 GB keeps me over my 5.25 GB quota. Please could a moderator delete this orphaned backup so it no longer uses my storage. I'm happy to provide my account details privately.