Since it stopped synchronising for a while, and after trying several tricks, I decided to reinstall from scratch. I have uninstalled and reinstalled a few times but always the same problem: the icon doesn't appear, and I never asked which folder to use as the root for Dropbox. In some occasions I got it synchronising with /home/user/Dropbox but I don't want it there because I don't have enough space there. I have an ext4 partition where I used to have my Dropbox folder (for a year that was working smoothly), and I want to redirect the Dropbox contents there. I cannot either use selective synchronisation because, again, I cannot access preferences, as the icon never appears. Any hints? I need a solution 😞
I tried the advanced installed several times before posting here. I could never get the Dropbox icon in the right upper corner back, so, that is why I can't use the "Move folder..." capability, selective sync is also unavailable, to reduce space. It doesn't respond to the option exclude either.
As I intended to use a distinct drive (with more space) in my hard disk, the only thing that seemed to work, even though I find it quite uncomfortable to use, is calling dropbox using as HOME a distinct folder. By now, I get my computer synchronising in the folder I wanted, but I don't know what happened and why it stopped working in June, as I have Dropbox running in another Ubuntu machine and everything works smoothly (by now, fingers crossed).