I did call the support chat line at TP-Link. They advised doing a hard reset on the satellite M4, but this did not help. I have 6 Decos, the main and 2 satellites connected with etheret, and the...

@AlphaBetaGamma thanks for the tip. I did as you suggest and the problematic M4 is still showing the signal source as 'wifi' although it is directly connected with a known good ethernet cable to the...

An M4 is connected by ethernet to my router, as is the main M4. They are operating in access mode. The signal source for the satellite is shown as wifi 2.4GHz/5GHz, despite the ethernet connection. I...