Dear Lustwaffel,
I'm sorry to hear that you are facing issues while using the add-on, the way the add-on works is that it rotates the model and renders the animation then it rotate it more and render again,so you get renders for the animation from several angles.
Please make sure you select the only armature before you click any of the buttons, please let me know if that didn't work so I can try to help you resolve the issue in a different way.
All the best,
Kamel.