You are receiving this email because we are continually improving our systems, and new tests have determined that theMerakicloud is having difficulty communicating with one or more of your devices. The firewall information page describes which IPs and ports you must whitelist in order for your devices to operate optimally.
Please check the firewall rules that these devices are behind: BTBRE-AP-01 BTBRE-AP-02
We can't see the firewall rule link. I think it would be better if you can provide screenshot of your firewall rule.
May i ask if you are having a non Meraki firewall as your Uplink? If so, i think you need to allow the ports that is given on the Help Section on the Dashboard that can be found on the upper right side of the pane.
We are seeing the same problem for one of our customers occasionally. There's never anything to see in the firewall rules and the customer doesn't see any impact on his WiFi availability so we also treat them like false positives.