Hi Ann-Marie,
I had seen the message about incorrect readings and to restart the device, but had ignored them and it didn't seem to have made a difference as all still worked ok up to when I checked last night. Just now found that my device at home stopped at 4:07 this morning when the temp went from 2.12°C (which is about right) at 4:02 am to 21.11°C at 4:02 and 4:07. I have now reset the device and will see what happens.
Also noticed that my second device which is at our daughter's in Milton is also not showing for a couple of days, and that could be out of power as that does not have the solar panel. Yours is looking good, and showing current time.
I guess I'll have to keep an eye on it for that message.
Paul