Are any cameras actually connected to AC power? Are you doing anything that may cause this such as clicking on the yellow triangle on a camera in the Devices tab which will tell you that zones need AC power?
Hi, When I connect to mains it removes the error and works as it should. However, there is no need to permanently have all camera connected to the mains - only required when charging the battery.
As soon as I unplug error returns.
I tried unpairing camera from smart hub and re-syncing but still get the same issue.
Activity zones are an Arlo Smart feature. Is Arlo Smart active on these cameras? You can check this by navigate to Settings > Smart Notifications > your cameras will be listed as active or inactive.