So i've had this PL for a long time, since 2021. Everything always worked, even after trying it 1 year ago. 

I've just connected them because i've moved places and I don't have a router on my room.

They both work, they both connect, they are both recognized by the program, but the receiver end doesn't recognized the eThernet cable. 

Mine has 3 lights, so the third light on the one that goes to my PC, doesn't light up.

I've swapped them, thinking it might be broken, but when i swap them they still work, it's only the PC one that never gets a third light shining. 

I've swapped cables, i've factory reseted them, reseted them through the app, swapped plugs, everything, but the PC one never recognizes the cable. 

I've tried connecting an eThernet cable to the PC in case it's a bad eThernet port from my PC, and it works. So i have no idea what's going on.