@LawrenceB The issue turned out to be a problem call "backlogging" or something similar (it has been awhile). This is a know problem (there are support articles on the tp-link website) where even...

I have installed a Mesh system with a total of 4 units (main unit + three satelite units) that are ALL connected via Ethernet. Until recently, the entire system has worked well. Recently, though, the...