How to fix if Wavlink extender not working?

First, check the power LED on your extender to ensure that it’s blinking orange. Check the WiFi network name you’re connected to. It should be with _EXT

TP-Link – Archer AXE7800 Tri-Band Wi-Fi 6E Router – Black

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Brand	TP-Link
Model Name	Archer AXE7800
Special Feature	WPS
Frequency Band Class	Tri-Band
Wireless Communication Standard	802.11n, 802.11b, 802.11ax, 802.11ac, 802.11g
Connectivity Technology	Wifi
Frequency	6 GHz