Found this on another forum. Might help people with gateway connectivity problems.
I manage 3 OH2 sites and will try this on a problem site this upcoming weekend.
My gateway is no longer visible in the router client list, so a bad cable could very well be the reason.
The network cable that came with the gateway was delivered as a big knot, so I suspected that it would cause problems. As soon as I swapped it with a better cable, all problems vanished. The app now connects to the gateway instantly, and I’ve had no random drops.