Nest thermostat not allowing to set date/time

[Surf]

The screen is giving message 

Your thermostat's date
and time are incorrect.

when I select ok or set date/time, it give me the following message

The thermostat is
restarting. Back in a bit.

then the screen goes blank for a minute, it comes back on with the G sign and same messages again

[Ryan_G]

Hi Surf,

Thanks for reaching out here in the Google Nest Community.

We're sorry for the delay here and I'd like check if you're still having this issue on your Nest Thermostat display. Could you check if it is connected to the Wi-Fi, as it is also needs to be updated.

Let us know how it goes and we'll be glad to assist you.

Best regards,

Ryan

[Ryan_G]

Hey Surf,

I just wanted to follow up and see if you're still in need of help. Please let us know as we would be happy to answer any questions you may have. 

Best regards,

Ryan