Quiz not working anymore

The quiz i started for some weeks is now not working anymore. There are still the buttons available to go further, go back and send the results
Last week it worked perfect.

pw for the webiste if necessary “ao”

I tested it on another website and there is the same issue.

Can you help? Second webpage is https://felixzimmermann.org/survey-quiz/

Thanks in Advance

Felix

• This topic was modified 6 years ago by felixzimmermann90.

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