I have about 7 or 8 Aeon Labs smart appliance switches - they are these ones (Gen 1):
I've had these for years on Vera Lite, Vera Edge, Smartthings, and now Hubitat. They pair first try every time (Device Type = Aeotec Smart Energy Switch). In Hubitat, if I go into the device and do on/off/etc. it works without fail. I have it connected to google assistant, and it works without fail. Used within Rule Machine, they work without fail.
However - when I put the device as a switch on a dashboard, none of these work. I press the switch button, it just says "sending" and never does anything, and never changes from "sending". I am at a loss as to why.