Google Nest Community

Mine's working again and I had done a factory reset on it. I changed the date on my phone back to 7th March as suggested.

Yes, this worked for me too. I got a bit worried when WhatsApp gave me an error message saying it would not work with the time set to a past date. I didn't open WhatsApp, carried on with the Chromecast update and then reset the time back to Automatic...