HomeKit Controller Integration - issues with Netatmo weather system

installed ok, added Netatmo weather system and up popped all the sub devices. So I thought I would concentrate on getting temperature working but the reading never changed. I redefined the device as a virtual temperature sensor, still no joy. However I could see in the log that the correct values were there. So that's one issue. How to get the device to show correct values.

Second issue, all the other sub devices disappeared so I deleted the Netatmo device from homekit using homekit, it's gone but homekit now reports this:

This device is already paired to another HomeKit controller. Remove it from all other controllers, including Apple Home, to add it to Hubitat. It will take a few minutes for the removed device to become pairing ready.

It was only ever paired to the one HE hub. What to do?