An Azure relational database service.
With a Developer Support Plan, your questions will end up here in Microsoft Q&A, see https://learn.microsoft.com/en-us/azure/azure-portal/supportability/priority-community-support for more details.
I don't have experience of that actually work in practice. However, since I'm a moderator, I see this for your post:
So somehow, you seem to have Developer Support now.
Hopefully, someone from Microsoft External Staff - who have access to more data than I have - can share more details about your support options.