I just bought a TP-Link Deco WIFI 6 mesh and it looks like the setting (Overview) page have a bug.
My General setup :
Router and Extender - 1st Floor
Router and Extender - 2nd floor - Connected to T-Mobile with Ethernet
As you can see here I have 10 devices connected to TP-Link via WiFi, but it shows connected Ethernet.
TP-Link is on AP config.
Can’t complain much as I get 500 Mbps d/l and 50 Mbps u/l. Real world steam download is 50 Mbps d/l.