Having compatibility issues with Linksys PLE200

Yeah I don’t have them hooked up as pairs; only one of the Linksys adapters is plugged into my router. The other Linksys is attached to a PC in the basement, and the two WDs are in the living room (one trying to get hooked up to a WD TV Live, the other not hooked up to anything at the moment).

And the two WDs see each other, so I don’t need to hit the sync button.