2023-04-03
I had the same problem but was able to solve it using the command line. If you are brave and have already removed DB, you can open a terminal. Then go to ~/Library/CloudStorage. then use the following command:
sudo rm -fr ./Dropbox
It will ask for your password and if your account is an admin account it will delete the folder. Basically this command tells the computer to delete the folder as the super user ("root" user).
I tried many other ways, and this is the only way I could get the folder removed.