hi - tried to contact support on Skype but no luck.
Anyway with help of PLi-members I managed to get the stick recognised.
However this was far from flawless, only after creating two softlinks ( /opt/script -> /usr/script + /opt/sundtek -> /usr/sundtek ) and a restart of enigma2 it got recognised. However the image is far from stable, it freezes a lot like it does on a dm800 first edition, especially if you want to view HD channels. At this moment a no go on this device, maybe drivers will get optimised one day so it can work, for now negative result ...