Hi, have the M4 system all up to date software wise, main hub and two others, main hub is downstairs at the rear of the house and other two on the first floor, one at the rear of the house (Back Bedroom) and one at the front(front bedroom). Both hubs are connecting to the main hub rather than front bedroom connecting to back bedroom and then back bedroom connecting to the main hub. Have changed from router to access point etc but no luck, as you can see front bedroom has a weaker connection so why is it not connecting onto back bedroom? Many thanks