I was able to follow the instructions and get it to pair and act as a secondary controller. However, I wanted add some scenes, so I created them and assumed I have to re-copy into the WDHA-12. When the recopy didn't work, I thought I should remove and re-add the WDHA -- and that didn't work. Next, I reset the WDHA and tried to re-add, and no luck.
Guess I should have let it be the first time around. Any ideas why it might not be cooperating any more?
Thanks