I started deleting files from a folder for more storage on dropbox, but then decided to save it to my desktop instead. Afterwards, I noticed that the desktop folder was now empty and so was the folder in dropbox. Bizarrely, the files I originally started to delete are still there in the 'deleted' folder. But the folder which held the files I wanted to keep, is now empty. There are no files to undelete, as they are not there. Any suggestions?