I had dropbox downloaded into a pc wich run windows 10 so I could manage my files directly in it (didn't use it very much though). Last friday i had to take that pc to a tech because it had been running slowly for a long time and when i got it back and reinstalled all the apps i noticed most fowlders containing tons of important pictures went missing! I logged in to Dropbox from google chrome and saw the same thing. I can't find those files even in the last-30-days-deleted place. Does anyone know what could have happened?