Did you restart SketchUp after installing the 3D Connexion app? When you installed SketchUp did you do so correctly? That requires right clicking on the installer which you downloaded, and choosing Run as administrator.
Yes, after installing the 3D Connexion Software, i restarted Sketchup several times but that didnt help. It was also correctly installed. I guess i need to enable some settings in the screenshot i think, but i am not sure.