I have a problem, some of the people I work with use the dropbox application on a computer, I use the website. When I change something in dropbox or add new folders, they don't see it in their desktop app, what could be the problem here? They use and save everything on their OneDrive, and I am logged in on mine, but I also have access to their OneDrive and when I do something in the application on their OneDrive account, they see changes in dropbox, but I do not have them on the website. Please advise.