The installation of the Link Advanced does not succeed, you are blocked, because you encounter the message: "No Link Advanced has been detected".
Check that the Link is plugged directly into a wall socket and that it lights up (fixed or flashing). If it does not light up, make sure the plug is firmly seated in the Link Advanced port. You should hear a “click” when plugging in.
Make sure you have installed Link Advanced within Wi-Fi range of your Box/router.
Also make sure that the Link Advanced is correctly positioned. It should be straight and not lying down.
Make sure the LEDs are flashing blue one after the other.
If at least one LED is on, then the Link Advanced must be reset:
Simultaneously press the reset button (near the battery compartment) and the button located above your Link Advanced for 4 seconds.
After taking these indications into account, try again.