I have set up a number of InstantOn APs. But I am stumped on a simple setup. AP15 is peered by a PoE injector, connected directly to a port on a Zyxel home router. The AP boots up, flashes green for 4-5 minutes, then shows a solid amber light. I have tried factory rest, reset the modem, etc. it seems that either the router is not giving a IP address or it is blocking the AP request to reach the cloud.
I have checked all router/firewall settings and port 443 is open. I can see from the router client list that the AP15 is getting a valid IP address. So something seems to be blocking it from reaching the cloud and enabling it to be configured. All other clients served by the Zycel router are getting IP addresses and passing traffic.
Any ideas what may be trying to block the requests?