You get redirected to enter your name and phone. Did it not ask you?
edit: You can't even access parts of openai sites from the "naughty" countries.
I'll save you from my diatribe about the pitfalls of you-as-a-user of using Google or Microsoft for login. But because of that, I don't know and so can only guess at what level OpenAI choses to rely on Google/Microsoft to validate accounts.
they are probably banned from doing any business in eg. Russia