I'm not sure I understand. I've been using UD for years, have 20 scenes, 50+ devices. Insteon, ZWave all work OK. Of course I have set the level in the scene....how would it work otherwise. Again, when recalled via either Alexa or a sensor it works correctly, just not from a switch.
You are saying to set the level of the controller, but in your picture you show what looks like a receiver?