I can run it from command line if necessary, I do that on my PI.

problem is that port 443 is bound to GL user interface, how can I change that?

Also, from trying other port, it seems the firewall is blocking incoming connections, how do I open a port for incoming connections?

root@GL-AR750S:~# netstat -tulpn | grep :443
tcp 0 0 0.0.0.0:443 0.0.0.0:* LISTEN 6183/lighttpd

thanks