I installed a tp link >> deco m4 range extender in a private house.
One is connected to the router directly, the other three are connected to a network cable that comes out of the to link switch in the communication cabinet.
The network is defined as an access point and the WiFi on the router is shut down.

For some reason, only one is shown as connected to the network and the other to WiFi.
I checked the cables, they are fine.
I changed location to another network point, same thing.
Anyone have an idea?