Seeking Advice: New Project with Active Billing Can't Access any Vertex AI Models (404/Empty List)

Hello Community,

​I’m seeking advice for a critical issue on a new project where I am completely blocked. I have exhausted all self-troubleshooting and the automated support system is preventing me from filing a case. I’m hoping someone here might have seen this before or can offer a suggestion.

​Here is a summary of the problem:

My Project Number is (PII Removed by Staff). My goal is to use the Gemini 1.5 Pro model from a Google Apps Script web app. The core issue is that the project appears to have zero Vertex AI models available. Direct API calls to list models return an empty list ({}) with a 200 OK status, or a 404 Not Found error for specific endpoints. Furthermore, the Google Cloud Console UI is missing the documented options to register or deploy pre-trained models.

​The main blocker is that I am in an administrative loop. The support console blocks me from creating any tickets (both Billing and Technical), even after fully activating my billing account from the free trial. I am completely unable to contact Google about this service provisioning issue.

​My questions for the community are:

​Has anyone ever experienced a new, fully billed project having no Vertex AI models provisioned?

​Is there a known propagation delay (longer than 48 hours) for models to appear after activation?

​Is there any other channel to reach Google Support when the main console is blocking all case creation?

​Any insight would be greatly appreciated. I have the full chronological details of all tests performed if needed.

​Thank you.