Feedback non intuitive
If someone does not enter feedback as free text, he will be prompted with
Bitte geben Sie zuerst Feedback ein, das abgesendet werden kann. If she enters something afterwards and hits submit, no submission takes place as far as I analyzed. The prompted message will remain in place.
By concept, I like the design with the list of dicts specifying the feedback questions, as this comes with a high flexibility. However, we need to find a proper solution for the submission.