I just now tried to open Logi Options+ to change my mouse's settings, and the first screen had a Downloading button with no other options available (aside from the Settings button). I kept checking every 5 minutes or so, but the app continued to show "Downloading" and a spinning icon—but never seems to get any closer to finishing. That means I can't change my settings. I've now turned off "Automatically install updates" to prevent myself from being shut out of the app in future.