Mine was having similar problems and I was able to fix it by turning off
the safety temperature feature. Then it would work normally. Then the
update got rolled back to a previous version. Hope it works for you.
Nest E thermostat here. I haven't had any connectivity issues yet. It
wouldn't heat any higher than the safety temperature. Someone on another
thread suggested turning the safety temp off. I tried that and it's
heating correctly for now. Hopefully Go...
