I have a Wpa8631 v3 and have been having wifi issues with a video doorbell, it also has 3 cameras connected 2 ethernet and 1 wifi. The doorbell is a tapo d235 and tech support have given it a firmware update as it was continually dropping connection. I've reset everything back to default, paired the main box and extender but now only the wifi camera is working? The ethernet cameras are not connecting and the doorbell shows offline on the tapo app just the wifi camera is working. I have the latest ee homehub and can see the doorbell as a 2.4ghz device connected on it and no ethernet devices? 

All lights are green on the extender and the middle one of the 3 is flashing green on the master unit ?

Any ideas please