Does the blue series power on if the dumb switch is in either position or does it only turn on when the dumb switch is in the off position? Can we get some pictures of the wires (somewhat pulled out) of the box?
Wiring looks right. I can trace all wires except for the To Liad neutral so I’ll just imagine it’s bundled in the neutral bundle. I’d recommend applying the parameters via hub as your next step. Get it paired and set the switch up. I don’t think the switch knows it’s a 3way dumb setup at this point.
After “programming” it numerous times, it finally started working. NOTE: Instructions are inconsistent. The included pamphlet says “hold on DOWN paddle” and press config 5 times, this following link says “hold down TOP of paddle” and press config 5 times. (the GIF video in the shows DOWN paddle) Resources | Wiring Schematics