Two thoughts:
- Sense has played with the Always On calculation a few times, but I believe the newest incarnation has stabilized since mid-Jan 2019. Here’s why I say that…
- Always On is a pure numeric calculation, but to assess it you have to look at detailed Power Meter views of your past 48 hours for Total Usage and for every device on a smartplug. Post those and maybe we can help diagnose. Or look at them yourself and come up with Always On values for each based on the near-lowest value over the past 48 hours. If there are dropout periods that total to over 15 min over the past 48 hours on your smartplugs, those could whack the subtraction factor from the smartplug to zero.