@Gerhard Thank you for reaching out to us and sorry for the inconvenience caused to you!
To raise a support request, please follow the instructions from this link - - https://docs.microsoft.com/en-us/azure/azure-portal/supportability/how-to-create-azure-support-request
The "trick" is: Click on Return to support request
in the page with the troubleshooting guides. This way you should be able to submit the support request.
Hope this helps!
If the response helped, do "Accept Answer" and up-vote it