Cannot provision a Neon database via Azure Portal or Cli

Hi I'm evaluating Neon as an possible alternative for our organization and at the moment I'm having trouble starting with this because all my attempts to provision an instance are unsuccessful. Via Azure portal I get an generic error: Validation failed. Required information is missing or not valid. There is an error icon on the Project tab, but when I go there, there is no clear indication, what is wrong with the data that I entered. I attach screenshots showing the error. Via azure cli I start with following command: az neon postgres organization create --resource-group rg-gwc-neon-t --name "greenwheels" --location "germanywestcentral" --subscription "<subcription-id>" and I get this error: (ResourceCreationValidateFailed) Value cannot be null. (Parameter 'name') I executed the command with the --debug flag an I see that following request fails. The debug output is attached here. Due to the payment models, I cannot provision/use Neon via the Neon console/website. I need to use Azure. Any idea what might be wrong? Thank you Vasil