Change device back to 8 March, and reconnect. It's fooling it. It does
an update Then I changed my device date back.This definitely works. I
wish I'd tried this before the weekend.
Thank you so much. After posting I saw a comment to do this from 8 March
and it worked. Not sure why Google did not front foot this and advise
this as the work around. I went a whole weekend without Chromecast. I
think I will definitely switch and up...