Hey all - I am slowly migrating all my hardware away from the dumpster fire that Wemo has become and over to TP-Link hardware which has proven WAY more reliable.

Anyhow, I installed a set of HS210 switches on a 2-way controlled light in our front hallway.

I believe the switch at my front door (which is the master) is indeed wired correct as it behaves normally, including both the button on the switch itself as well as via the app.    I followed the directions and identified all the wires and it seems all good.

The second switch further inside the house however, not so much.   

I have tried seemingly every combination of wire connection options but no matter what I can't get it to work.   The way it's currently wired I can hear the relay click inside the switch when I click it, but the lights in the front hall don't actually come on.
 

Any pointers?