Issue setting up ZWAVE association (Red Series Dimmer)

I hope someone can help me with the following. … I know it works, I had it working before, it worked great. I have since migrated to new V3 SmartThings hub and I don’t seem to be able to get the setup right …

I have my upstairs landing lights on a red series dimmer, this upstairs switch has the load connected. I have a red series dimmer downstairs that was connected via a ‘z-wave association’. The solution allowed me to dim the lights from either switch.

I installed the inovelli device handler. I installed the parent and child device handler for Z wave association. I configured the zwave association smart app using group 2 and group 4. I just don’t seem to be able to get the downstairs switch to control the lights.

I hope you can help me troubleshoot. I am attaching screenshots from the IDE

Secondary switch without load

Pushing to the top of the pile

Hopefully someone can help me with this ?

When associating dimmers you want groups 3 and 4. On the non load set the association behavior (param 12) to 11

Im using hubitat but i had to use groups 2 3 and 4 to make it all work perfectly. No idea why, but it works.