::
I have the same issue although all sensors can sometimes connect to just 1 hub but other times some are out of reach. I cannot get both hubs to say on-line. to I bought another hub but I am having difficulty keeping them both on-line at the same time. When 1 or both hubs mysteriously go off-line: I try various things including the one you mentioned without consistent success. Anyway, Orbit should come out with how to make multiple hubs work, and explanation of how they work, or just say you cannot have multiple hubs!