It has been my suspicion that, when they 'Google' removed the function
of staying logged in to youtube on the all but the new chromecast, that
this has caused an issue showing the options on a screen as the
Chromecast is no longer logged in to the us...
I have the same issue and have an open case with Google, have been
waiting months for a resolution, I have a disabled partner who relies on
the hands free functionality, I wait with baited breath, its good luck I
didn't hold it...
