Remote Administration Panel

I have the ex4.

I want to connect to administration panel of the ex4 remotely. I have create a port forward to my router NAT table, to 80 port of ex4, but the ex4 answer 

403 - Forbidden

 I have try and https 443 port but I have the same answer

… and did you enable “Dashboard Cloud Access?”

It’s disabled by default…

Forward external port 8080 to internal port 80 to your NAS.