Azure OpenAI - Base Models Disappeared

Question

Error Info:

• I was able to use OpenAI service for a day or two. However, it suddenly became unable to be used.
• In OpenAI Studio, my models has gone, and I am unable to deploy or create anything. When I click "Create a custom model" button, nothing happens. no response.
• my chatbot still works in Studio and able to be access by developing python environment but not other application.

Error Message:

<When Tring to Create OpenAI>

The subscription does not have QuotaId/Feature required by SKU 'S0' from kind 'OpenAI' or contains blocked QuotaId/Feature.

When I chose other region only "Italy North" let the error message gone, but I still cannot select Price Tier

<RESTs API POST response>

Uncaught (in promise) Error: 'NoneType' object has no attribute lower.

My collogues have a environment under the same condition as mine, accept we using our own OpenAI. Thus, I think my broken OpenAI is the reason I got the error.

What I have done so far:

• I got email that my subscription has registered to Azure OpenAI service, twice(I tried registered for second time, wonder if it works).
• I changed my language and region settings to match Azure OpenAI settings, still not working.
• I tried creating new resource group, still not working.
• I moved my subscription to another directory, not working too.
• I tried using azd command to changed the location too but it does not working.

My Account Info:

• I checked my Quotas and Credits, there still plenty left.
• My subscription, resource group, and OpenAI's location are all the same: Japan East
• I only have OpenAI as a resource in a resource group, I do not need anything else as I'm just trying to create a public chatbot.
• My SKU is set for s0, I tried to change to S or S1 using CLI, but not working.
• My subscription is Azure Free subscription.
• My account have Owner and Cognitive Services OpenAI Contributor as an authority on the resource.