Custom key binding does not work

Hello, I’ve got some problems with key bindings. I can not get them to work, I Googled every question, but could not get them to work. What I’ve tried so far (also debugging):

  • via keyboard events in the Blueprint
  • setting a custom input action
  • enabling input from the Blueprint
  • setting the “Auto receive input” Detail for the character

I’m placing a character Blueprint into the world (no 3rd person, it’s a floating character). The project I’m on is the free ArchViz project, however it does work only on the FPS example project from Unreal. Maybe it has something to do with Player Controllers, or something like that? I’ve attached some screenshots with my objects and the Blueprint I used. Many thanks!