I have 3 P9 units to try and get a strong Internet signal to my home office.

The first P9 unit is hardwired and sat next to my router. A second P9 unit is in our kitchen with the third P9 in the home office. Despite the fact the second and third P9 unit are only about 3 m apart as the crow flies. I often have to rely on the powerline connection to get any signal in the home office and even this drops out often. 

I have therefore tried to set up an Ethernet cable directly from the router. This has an RJ45 connection to the router and is connected to a wall socket in the office. From this I then use an Ethernet cable to connect to the office P9 unit.

after doing this it still says it is connected via PLC and not the wired cable. I know the wired cable works because I have tested it directly on my laptop. 

can someone help me to get it so that the Ethernet back haul works and so I can get stable WiFi in my home office.

thanks in advance,

Matt