Thank you for the reply, I did try Universe 0, as well as setting the box to static IP. Also changed it to use sACN. Nothing seems to work.
I do have a different application that runs on an iPad, if I use it, it discovers the Enttec via Art-Net, and it able to control the lights.
The Enttec was running firmware 3.8, I saw 3.9 on their website, and updated it. But that has not made a difference.