Your Clock is behind

The browser package isn’t opening website because it claims the PI’s time is behind (1970)

That suggests NTP isn’t working. If that’s the case, this should fix itself after around 2 minutes as the device then reaches out and fetches a less precise time from HTTP.

Is there a way to change the NTP source so that this doesn’t happen?

Modify your DHCP NTP option, check out NTP device config or use the UI in the configuration editor on a device‘s detail page to change the NTP server used.

Thank you very much!