RBR850 Strange behaviour following restart

I restarted my orbi RBR850 and two satellites yesterday morning when I noticed there was no internet. The system came up and office machine connected (it is wired to the back of the orbi router). A speed check on the office machine gave 650MB.

The app showed no satellites and although they reconnect, and show blue before turning the light off, they are not seen in the orbi app and don't seem to be doing anything. The wifi comes and goes randomly on our phones and when it is available speed tests to just 44MB - even if standing right next to the router.

The orbi app shows no satellites connected and the orbi login shows no satellites connected. It spends an age trying to connect to the router.

I'm on 7.2.7.15_5.1.16. I manually upgraded to this even though it is what was showing.

Is the router broken?