Added 3 security keys as I was recommended- worked fine with my PC on the day of the setup. Next day on mobile trying to log in, app asks for registration of a key and doesn't accept login without this new registration, the app then closes the window after a short while, regardless of key inserted or not. I already added my 3 keys, why do I need more for my phone?? - new update changed nothing, except now whole app closes, not just registration windows.