No luck reverting back to the March 9 firmware version (.14) for the base station and cameras. I deleted all devices from the app and tried re-attaching. I could get 2 cameras to add as devices. The other two repeatedly failed when trying to add the device. The base station would only communicate with the cameras for about 5-10 minutes then the base station would start blinking yellow and blue and the cameras would go offline.
I updated back to the April 19 firmware and the behavior was the same.
I then loaded the June 14th firmware and the cameras connected and stayed online for several hours - as long as I left all the cameras on the same desk within a few feet of the base station. When the cameras were moved into place - no more than 30’ from the base station - the system worked for about an hour, then the base station dropped offline. If I reboot everything, the base station and one or two cameras will come online for a few minutes then disconnect (even if I move the cameras right next to the base station).