is there anywhere an instruction how I can export and then import saved preset-styles?
BTW: I've bought a license for my laptop and when I then use the programm on the other computer is that possible with this same license? or do I have to buy another license?
Presets are stored in the User directory of Panotour Pro. Use the menu "Edit/Open user directory" from Panotour Pro. Copy its content on the other platform.
If your preset uses some resources/files , you'll have to copy the resources on the other device.