Every time I say “Hey google open YouTube” or I click on the YouTube icon it says “"Sorry, I don't know where to play the video. Please tell me the exact name of the display.” I say “Hey google open YouTube on [displays name]” and it says the same thing again. It used to work then all of a sudden it just stopped. I have 2 devices Google nest and Google Hub Max and it says the same thing on both.
Thanks for posting here in the Google Nest Community.
This is not the experience that we wanted you to have, let me help you out. A few things: have you tried using another video service to further isolate the issue? When you try to play YouTube music, is it working? What steps have you tried so far?
You can do a sequential reboot. First, unplug your Nest displays for 30 seconds, then do the same thing on your Wi-Fi router to refresh both devices and your Wi-Fi signal.
Keep me posted.