Hello, my dropbox is full but unfortunately I cannot see any files (not in the app, not on dropboxwebsite or on my computer) so there is nothing to delete to free up some space. When I connected my external disc to my computer, it started to back up all files from disc to my dropbox by mistake. My dropbox was full immediatelly and since than I keep getting messages to upgrade or free up space. I would love to free up space but there are no files, nothing to delete. Can you please help? Thank you