attempting to reconnect my Wifi Extender to new home Internet

[DeJean1961]

Trying to set up my Netgear Wifi extender to new T-Mobile 5G home internet, but not getting the prompt to do so on my PC or phone. I have hit the factory reset button, but not recognizing any Wifi Signal.  

Any suggestions.

[plemans]

What wifi extender do you have? 

When you factory reset, did you push and hold for 7-15 seconds while powered on? 
If so, the default ssid should be netgear_ext.

Make sure not to hit the wps button if you're following that route of install.