I understand that I don't have informations to give you but maybe others have the same problem.
In my house I have 5 tablets for the data of my home-automation, all the tablets are amazon fire ... (all the tablets work 24/24 - 365/365)
4 tablet show dashboard 1.0
and only 1 tablet show 1 dashboard 2.0 with some gauge for:
temerature in and out,
humidity out,
uv, rad, humidex index
Well, daily the dashboard show allo the gauge with 0 value and I'm forced to close and restart the dashboard .....
This happens randomly, one time, two time for day, often at night but even during the day.
On all the tablets I use fully kiosk browser and I have this problem only with the dashboard 2.0 (this tablet don't have update procedures set).