Properly connect your extender to the router:
Before proceeding further make sure that the router and wifi extender is in range of each other. Also, make sure that both devices are connected physically through the ethernet cable.
Check the power supply:
Ensure that both router and the Netgear wifi extender are getting good and proper power supply
Check that they are plugged correctly and the wires are not damage not from anywhere
Clear browser data

Delete cache, cookies, browsing history, malware, and malicious files from the internet browser After this, exit your current browser and look for another relevant browser
Check wire connection
Make sure that the router and the extender are connected through the ethernet cable. And all the wires are connected properly, and it is not torn or has any sign of damage on it.
Update the firmware of the router and extender
Outdate firmware might have bugs or glitches, that is building inside Go to the official website of the Netgear wifi extender, to see the steps for the Netgear wifi extender firmware update
www.wireless-extender-setups.com
