It happens quite often that all actions bind to additional keyboard/mouse buttons that utilise ctrl key stop working. For example I have Prev/Next Desktop action bind to mouse buttons. And now they work as just left/right arrows (orignal shortcut is ctrl+left/right arrow). Logout button on keybord, just types 'q' (original shortcut is cmd+ctrl+q).
I'm using actions predefiend in logi+ and this is quite old issue (happened in old app too)