So to summarise, here are the combinations of behaviour observed:

  1. Streaming of film stopped on Chromecast, left green light steady, middle green light flashing rapidly, red light flashing normally. Admin page inaccessible.

  2. Streaming of film ok on Chromecast, left green light steady, middle green light flashing rapidly, red light flashing normally. Admin page inaccessible.

I will verify lights on router next it happens again, but i think that is accurate.

I’m loading the router with NordVPN ovpn configurations but not certain if they are active/enabled at the time of these issues.