Restoring Buddy to factory settings
On Keenetic Buddy Series extenders, you can reset the settings using the Wi-Fi Control Button. Press and hold the 
button, until the LED starts flashing rapidly. Release the button and wait for the extender to reboot. The device will automatically reboot and the settings will be restored to factory defaults.
Important
After returning to factory defaults, the extender will need to be re-added to the Mesh Wi-Fi System.