Image Mapper – Categories

We inserted two maps on our Website
1) https://i.unternehmertum.de/
2) https://i.unternehmertum.de/outgoing/?csrt=16034238404625063437

As soon as the categories are selected, nothing is visible on the map / all pins are gone.

In the backend “preview” everything works. Can someone help me out?

Thanks in advance.

The page I need help with: [log in to see the link]