We had 1 ring doorbell battery operated camera and 2 outdoor stick up camera bought years back and working fine.  But now in a week every day Cameras going offline. When we unplug and plug the power of the wifi hub then it will goes online and working fine. But the next day this problem coming. So to work the ring Cameras every day we have to unplug and plug the power of the wifi hub to work the ring cameras. We don't know what's the problem?.