Google AI Studio permission denied error

Hello Google AI Studio Team,

I cannot access Google AI Studio.

I get this error:

“Failed to list models: permission denied. Please try again.”

I am then redirected to the “Available regions for Google AI Studio and Gemini API” page.

My Google Account birthday is 2003 and I am over 18.
My phone number is verified.
2-Step Verification is enabled.
I am not using a VPN or proxy.

I have tried accessing Google AI Studio again, but the same error continues.

Could you please check if there is an account-level permission, security, eligibility, or regional restriction preventing my account from accessing Google AI Studio?

Thank you.