Postgres Flexible Server stuck at start

Hello,

I have a similar problem as https://learn.microsoft.com/en-us/answers/questions/5523543/the-postgresql-server-is-stuck-in-updating-state-f:

Yesterday, I tried to upgrade the PostgreSQL version of my Server for which I waited more than 4 hours without it being completed. Ultimately, I canceled the upgrade process and tried to stop and start the server.

Now, the server is stuck in the "starting" state and trying to stop it again using the CLI yields: "Cannot perform 'Stop' server operation because server '...' is busy processing other operation."

Also, in the server's activity log, I see a lot of "Get PostgreSQL server list" message, every 2 minutes since I started the upgrade process yesterday.

It would be great to somehow stop or cancel any ongoing operations on the server, but I'm afraid I cannot do that by myself using the Azure Cloud Shell..

Thank you for helping me out and best regards,

Emanuel