@woozle Thanks so much for your reply. 8ve tried your suggestion but the light is still red. The update was suggested as nothing else was working. The method I used 2 years ago was a different router...

Good Evening. My extender has been working for 2 years. Last week it stopped and a red light came on. I've tried to reconnect it via the ethernet cable but can't. My fibre box has no WPS button....