Welp. Thanks all for the help every. I’ve spent a few days trying to learn a few things.
…I’ve learned this device is a real pain.
Conclusion up front: I’m likely to remove this device from the wall and replace it completely, likely with a zooz model. No blame to anyone here. I appreciate all of the help.
Some notes. A parameter scan never returns. I’ve tried many times and it always sticks on waiting for device. I’ve tried “waking” it. No luck. Regardless, that wasn’t really the goal.
It took me a long time to understand the instructions for the device config tool relative to the association groups. I did eventually find how to associate the hub node on group 2. I made a lot of mistakes here, initially missing the note about the hub ID and using the switch ID instead. Doing so breaks the switch and I had to factory reset again. (Btw resetting, excluding, or adding the device requires removing screws from a live switch and carefully inserting a very long and thin switch in the dark attempting to rapidly hit the program button. The instructions say the switch lines should work for exclusion. It did maybe once. But not reliably. So working with a switch disassembled for a while also limits the ability and motivation to work on this as well. — again, no one’s fault here, but it’s just not great.)
Despite this, the device still did not seem to send any change for switch 1. I also tried setting a parameter 3 as well, but that never seemed to work.
After completing the association to group 2, I also removed the config device, removed the config driver, excluded the switch and re-added it, even resetting it again, testing functionality at each of those steps all along the way after the manual node group inclusion, but still no change in behavior.
I already ordered the zooz switch. I’m not particularly looking forward to switching off the breaker and doing this work. But ah well.
I’m not in a hurry though. Primarily this switch only acted as a scene controller. (The relays have never been connected to anything. They are capped off.) I’ve never found a scene controller that would provide dual real decora rockers for instance, not push buttons. But the “light” devices this scene controller was paired with are outdoor lights running on an fx-luminaire system. (Surprise, no edge driver for these either unfortunately.) Which just means if and when I fix these switches…. I have no lights to control until either A. I learn how to write a lan-connected lua myself… which I could do, but time?? Or B. Someone else writes or ports the Luxor fx luminaire handler. (I’ve posted in the major topics for this already. It’s a niche market unfortunately.)
It’s been kinda a rough few weeks as various switches and lights around our house have all stopped working at once. 
But again, everyone here has been great for trying to help out. Maybe one day, there will be a better way.
J.P.
tweaker is no longer available, of course, but the configurator does the same thing, so it seems worth a try. But with leveled expectations.