If your setup fails, reset your extender. Press and hold the reset button for about 10 seconds until the LED blinks. Reboot and start the setup process again through mywifiext.net or the WPS method for a clean installation. https://wifiextender.odoo.com/blog/wifi-extender-3/how-to-set-up-and-install-a-netgear-wifi-extender-for-better-connectivity-15