Hello -- I have followed instructions on your posted solutions for uninstalling Dropbox from my Mac laptop (Mojave 10.14.6) to no avail. At the Finder (not Launchpad), I have tried dragging the application to the trash, but it says it is open. However, when I go to Force Quit, nothing is shown as open except Finder. What to do? I would love to delete this, because I don't wish to use it, and quite often it pops up unexpectedly, demanding my computer password in order to work properly. No thank you to that! Cheers and thanks to the community for assistance.