OpenVPN Client Settings for AdvancedTomato Shibby

I have setup a Raspberry Pi and installed PiVPN, all well so far. I then installed OpenVPN GUI on my desktop and OpenVPN Connect on my Pixel phone. Using the instructions provided by the PiVPN project I created a config.ovpn file. I installed that file on my desktop OpenVPN GUI and my Pixels OpenVPN Connect app. I then tested both the desktop and the Pixel connections and they worked perfectly.
Now the problem, I wanted to setup my Asus RT-AC68P running AdvancedTomato Shibby version...

OpenVPN Client Settings for AdvancedTomato Shibby