<p>if you're directly copy/pasting your pin number, sometimes that adds in an extra space (ie "123456 " instead of "123456"). That's what happened to me earlier.</p>
<p>It means Harvard has already rejected you.
jk.
If you still haven't gotten it, try typing the numbers instead of using copy/paste. Also, make sure the last name your using is the same one in the email/letter with your pin.</p>
<p>you should also have gotten something thru snail mail with the same info as the email. check if the pin number they give you in there is diff from the one in the email.</p>