My friend set up the Dropbox account on my laptop under user/gloria/ Dropbox. I have a lot of excel spreadsheet stored. I can easily find them. However, when I sign in on my cell phone to drop box, I can’t find most of the files on my laptop. My questions: 1. Are those excel file stored only on my laptop? Is it automatically stored on my drop box account? I paid extra for Dropbox storage but not taking advantage of the storage. 2. How do I erase file on lapstop and only store them on Dropbox? To allow more storage on my laptop. 3. If files only store on Dropbox, is it safe?