Well like it or not, because of those former posts, until you have the "Age Verified" tag under your name, you'll be considered to beunderage and having broken the rules of this forum, the community, as well as the law to procure an airsoft gun. Whether or not you chat with your brother (giving you the benefit of the doubt and you are telling the truth) is irrelevant. If you are who you are, then he blew it for you until you get age-verified.
One thing you'll notice is that ASC doesn't take kindly to those who violate the rules and most guys have a good memory. And starting another account won't help either. So as of now, until you get verified, you can pretty much considered yourself screwed.