Thanks a lot Darvin!
It obviously really just works if downloaded on another machine. I tried it out on my PC yesterday. I didnt have to do anything but download it on my PC and copy it to my tablet. Not the direct way but at least it works!
Ups - looks as nobody can help here...
I bought a samsung notes and got a big fan!
But if most of the pdf-imports get dark this device is nearly worthless
Who can help please???