I have 3 v1 cameras and 3 v2 cameras. All have worked fine for a long time. Today all the v1 cameras went offline with an error 90 message. Restarted my phone-no change. Unplugged and restarted all 3 cameras–no change. Checked the firmware and all 3 say up to date. The v2 cameras are working just fine. What is going on here. How do I get the cameras back up and running?