Both of my outdoor cams went offline and would not come back online despite all the help Support could give me. My base was fine and my wifi and internet were functioning. Wyze was ready to send replacements when I tried one last thing. Since the cams were useless offline, I deleted the cams and treated them as if new. Powered on. Pressed sync. And as if by magic they reappeared and worked. Only had to change the names back to what they were before. All other settings were retained by the cams.
Hope this helps someone else.