I've read the note in the UI about: sensors can't be added because maybe they are disallowed in the long term statistics, but I've quite a few that appear ok in the stats but I still cannot add them to the power data.
How can I debug this? The one I am chasing right now is a power measurement, (unit = W), from a zigbee2mqtt device. It's energy measurement is in the energy dashboard, but I cannot add its power sensor.