We have six Ring Battery Outdoor Cameras. They all have strong WiFi signals. Nevertheless, we lose contact with some of them on occasion. We can not connect via Live View and the Dashboard will not update. It is not always the same camera(s), so I don't think it is a specific camera that is the problem. The cameras spontaneously return. Ring support has not been of much help. Has anyone else had this issue? Any ideas as to what the problem might be?