SO,
As soon as the update of displaylink 1.3 and 1.3.1 came out it was working, but after 1.4 it stopped working, as well as many macmini owners who were using dock stations and displaylink with up to 3 screens simultaneously, and after the update it stopped working . as you can see here.
https://www.youtube.com/watch?v=KzzM8gOT1zI
So my question, why did it stop working?