Error 403 - This web app is stopped: captureone.com currently unavailable

At around 19:00 CET, captureone.com became unavailable to the public. At 19:45 CET the website was back up again.
At 22:27 CET intermittent sporadic problems were still detected with the main traffic mostly unaffected. Our engineers are working on the permanent fix and monitoring the incident closely.
Update: Our final mitigation step on November 6 restored the website back to normal, since 2:00 GMT+2 no failed requests were.