Although to extend the network but complicated to install

I chose this product to better capture the Livebox to the end of the house (20 m and some plasterboard partitions).
Following the instructions of the reduced provided doc, it was not working.
After some research, I realized the need to connect the repeater with an ethernet cable, assign an IP address in the fields of the network of the Livebox (by default it is configured 192.168.0.254 as my network is 192.168. 1.xxx). Similarly, the password set to be identical to the Livebox.
After these mods, it finally worked and I now have an excellent signal intensity throughout the house.

FOr more detais, I followed these explanations [...]