Follow-up: Due to a network issue non-cached asset requests for the slide and audio challenge in the Frankfurt region were partially impacted by 502 Bad Gateway errors.
We will work on improving CDN availability to minimise such errors in future.

Failed Requests are responding correctly again. We will continue monitoring the traffic and follow up shortly.

Due to issues with our upstream CDN Provider, requests run into timeouts or error. We are working with the provider on a fix.