Hello Lars,
Can we just check that you've contacted Prof. Maier (OrganArt Media) to make sure that he's happy for you transfer the licence? I was under the impression that OrganArt Media's licence didn't allow transfers:
http://www.organartmedia.com/en/license.html
... but perhaps that's changed, or if Prof. Maier has given special permission then of course it's no problem.