Fortunately standard operation can be summarized in a few lines (as of time as it may help):
1: It connects to the thing either with the network cable (provided) by the Wi-Fi network "WiFi-Repeater" that is functional and open (without code) as soon as branch and after each reset (5 full seconds on the button reset, manual says 10)
2: Access to the configuration by a web page whose address is [...] with the username admin and password admin
3: Quick functions are optional
_ AP: create a wireless network by being connected to the box by a cable (new name, new code, separate network from that of the box)
_ Repeater: relay the existing wireless network seamlessly by connecting to the box by wifi (same SSID network name to retype imperative, and even code)
Warning: Although there are advanced configuration functions, it is no longer accessible once in repeater mode. At the slightest problem is reset and reconfiguration.