Apple TV 4K won’t connect to WiFi but will connect using ethernet

Apple TV 4K little over a year old has suddenly stopped communicating on WiFi. Restarted, reset, failed connecting to WiFi via auto phone setup, so tried ethernet cable and software update, then removing cable. Sees the WiFi network but will not connect. There’s no entry on the router. No interference etc, as my other Apple TV (different gen) works fine in the same location (when swapping over)