Hopefully this isn't considered "pedantic".
"Total Power Today 0.000 kWh" is... flat out wrong.
Ditto:
tele/sonoff/TODAY_POWER 0.001 kWh
tele/sonoff/PERIOD_POWER 0 Wh
Power is commonly expressed with the unit Watt, but Wh is used for energy. The two are not interchangeable.