if the wifi isnt showing then the rebind hasnt worked,
resetting the range extender
hold in the reset button
the system light must go out and stay out for at least 8 seconds, if it comes back on start again
once done the wifi will show on the phone
go through the binding process,
if you enter the wrong MAC address then this will also cause the issue
you must use the correct MAC address, it is the one for the wifi module, best bet is to open the quad up and read the MAC address from off the top of the unit.
or you can use a windows program called INSSIDER
the SSID will be a hidden one and the MAC address starts with 60 60
here is a video guide for INSSIDER