Mix track Edge with Djay Pro Demo

I downloaded the updated Demo version of Djay Pro because I am interested in purchasing the software. I wanted to see how it works with the Mixtrack Edge. I am on a iMac with the most current OS. I can not get the Mixtrack Edge to work with Djay Pro. It is a natively supported Midi controller. What am I doing wrong?

The Numark Mixtrack Edge is natively supported by djay Pro. After connecting, you should be able to use it without any problems.
Can you ensure that the controller is working at all?