Well, it depends first of all there is no port 83 open on the router (webinterface works with port 80)

second, if you would like to access ssh and the webinterface from your local network you have to change the firewall settings by default incoming traffic to the wan port will be blocked… if you want use ssh you will also have to select the port of the dropbear instance (Advanced ->System -> Administration)

 

I would recommend to make all changes and settings with wifi from the gl.ar150 or with a lan cable attached to it, sometimes there a strange problems using another router to configure as you can see

 

edit: Port 83 seems to be the port you can access from the internet if u want to access the router from ur workspace or similar. havent tried it before,