Aeotec Micro Smart Switch G2 Wiring 3 Way (Another)

No my line was in the light box. That’s the reason I had to use the Micro vice regular smart switches.

I think you need to get a meter and verify which wires are what. You should be able to make it work. Make sure you have the right wires on the C on the switch. I had to use a meter to figure out which screw terminal was the common for the switch.

I wouldn’t recommend getting a line and or neutral from another circuit. I’m sure you could figure out how, but I believe it is generally not an acceptable practice.

Have you looked at this thread on 3 way circuits to see if you could just use switches?