Can't use it because I can't see it!!! Installed from Play Store. Play Store shows it is installed on my phone (including using the correct ID name for my phone). The app is NOT visible/accessible on my Galaxy Note 4! Phone has been rebooted and I have tried using the search function in Apps using """"""""authenticator"""""""" and 'google' to locate it. No luck. So  I can't see it on my phone  I can't reinstall it and I can't delete it because it's invisible. Suggestions welcome. :)""
November 30 2016