@jocodis 

1. DId you enable something like Portal Authentication? I have EAP225 and the AP can still work with existing settings even though the controller offline;

2. Port 29810-29814

3. The router is using the same port as EAP. Also the router can still work even the controller disconnect

  @Somnus

Thanks for your help.

I have a local portal auth only for guest Wifi. 

I meant than, when the controller is offline and when I reboot an ifi AP, the AP tries normally to provision but fails because the controller is offline, then Wifi is off until the controller goes online and the AP can provision. That's the problem and I would know if it's the same with the routers managed with a controller or of there is a "security" to prevent those fails.