@vlkn This has nothing to do with either your region or your actual age. They seem to randomly disable masses of accounts from using Google AI Studio. It’s just really unreliable.
If anyone from this thread are still facing access issues from supported regions, we have an official way to report such access issues using this link..
I can’t see how reporting can help if you can randomly suddenly put IP address that have been accessible to ai studio for months into unsupported region while all other major IP lookup service still clearly state the IP address is in those regions.
Most hilarious part? Your own Google search footer also recognize the IP address as in a supported region