ios 16.5 homekit issues

Hi there. I’ve updated all my devices to iOS 16.5 and bought a HomePod mini to act as a hub. At first I lost my Eufy 2c battery cameras and bridge, then none of my Lightwave devices would talk to Home, then my individual bulbs did the same. I have checked every element of the install process I can and eventually deleted my whole home. I’ve started from scratch, but so far no luck installing anything. The idea was that it would make life easier with my disable son, but now I am juggling the individual product apps instead of being able to use Home to control it all. Anyone got any ideas?

Cheers

Joe