Last but not least, I did not have one single problem installing and configuring it. Still I ran into a big issue with a complete blank website, caused by the deinstallation of the previous slideshow component. I wrote to the developper and within a few hours, he had pointed me into the right direction and I was able to solve the serious problem myself.
So I can say out of experience that the developper is very responsive.
Certainly recommended and certainly worth the money.
More important even, it is one of the few extensions that does NOT use Google Maps. It can be suspected that one day Google will decide that we have to pay for their service, but the OpenStreetMaps used in this plugin are so much better for evryone interested in outdoor activities.
Last but not least, the designer is very responsive.
Great that this plugin helped you out, it is always nice to get this kind of feedback. Thank you!