Eligibility for Halo 4 Infinite Challenge.

I’m currently have issues with entering the Infinity Challenge for Halo 4, I have entered my personal information only to be told that I am not elegible. I am currently 16 so I am legally able to play Halo 4 in Australia where I am. The Terms and Conditions say you have to be 18+ but that is in America, is that the same in Australia or is the challenge itself not enterable for players in Australia.

Thank You

american promotion would go by american rules and restrictions. if you arent 18 you arent eligible.