Cannot access Google AI Studio - redirected to available-regions page

My account cannot access Google AI Studio since March 11, 2026. It always redirects to the available-regions page. I have verified the following: - Country: Spain (supported region) - Age: over 18 - 2-Step Verification: enabled - Terms of Service: accepted - Tested on: multiple devices, browsers (including incognito), and networks (WiFi and mobile data) - It worked correctly on March 10, 2026 - Error message: “Failed to list models: permission denied” Is there any restriction or flag on my account? How can I fix this?