I recently had a SSHD put in my desktop computer. I had to reinstall Dropbox. Having trouble syncing my iPad with the desktop. Also can’t figure out how to load files from my documents on pc into Dropbox to make them available on iPad. I clicked on backup and got more than I wanted filling Dropbox and not leaving room for anything new - basic install. Should I uninstall and start over? Don’t want photos and ALL files on pc backed up.