If this doesn't solve the problem, you might want to consider checking the firmware update of the extender. The most recent version on the Wavlink AC600 setup page must have existed on the management window. Then select and download the official, latest AC600 file, and save it in an adequate manner. Once the upgrading is done, you can reboot the extender again to check if it really wo... https://wavlinkwiifi.com/wavlink-ac600-extender-setup/