Thanks @woozle Everything checks out per your comments. I'm guessing that the router recognises them as mesh devices, but they don't appear in the yellow circle because the Powerline devices don't...

I may be posting this in the wrong section as possibly a router issue but here goes. My Archer AX53 / AX3000 will recognize my two TL-WPA8631P extenders as Easymesh/Onemesh devices when the extenders...