the description of the slideshow module says:
2. If you want to have the same look&feel as shown on our demo, please use the settings shown

There is a position top100, which i cannot find.
The Blog template doesn`t include such a position.
How can I make it look like the demo?

Hi there, our Blog theme has no module position "top100"
Here are all positions
demo.joomlaplates.com/jp_blogger/docs/#6

Problem solved.