xbox age verification in Korea

I'm in South Korea. We bought an xbox and it's asking to verify my age.

It told me to go to http://live.xbox.com/ageverification. There's a link there that says "Verify age". When I click on it, it takes me to a page with a button "Confirm Age".
I click on that and it takes me to an error message for a website called siren24 https://ipin.siren24.com/i-PIN/jsp/ipin2_j01.jsp

I went to the siren24 homepage and created an Ipin. The Siren24 website told me that it has verified my age through my phone number account. However - When I go back to the xbox site it takes me to the same dead link. There seems to be a problem with the link
on the confirm age website.

I contacted customer service about this twice. The first guy never got back to me. The second lady sent me a long email about why they verify ages, and a different link to go to verify ages www.xbox.com/verifyage .
However - the webpage www.xbox.com/verifyage is missing completely. It redirects me to a "Page Not Found" link https://www.xbox.com/en-US/verifyage

I tried doing it incognito and that doesn't help.

I've tried every step on IE. Chrome. Safari. on my ipad, iphone, and desktop computer.

I also checked that my birthday is correct on my account, I'm over 18, I tried setting up a parental account and that also didn't work.

Anyone have any other ideas? Customer service isn't' answering.

:)