If the indicator is broken in the notification/clock area, which I suspect it is because same happened to me then this might help.
I've been playing with dropbox on Z12 Lite over the last few days and have this work around.
Go to Menu>Settings>Session and Startup then choose Application Autostart tab at the top.
Find the Dropbox entry and click on it then click remove at the bottom. The old command is something like "dropbox start -i" from memory.
Click Add, Name it Dropbox, Description=file sharing or what ever you like, command, this is the key so copy and paste the line below:
- Code:
dbus-launch dropbox start
Click OK and then Log out or restart your computer
- Zorin 12.1 Lite, Thunar File Manager open on Dropbox with Session and Dropbox startup command creation. Notice Icon in tray and Notification on screen.