@schmendy27 I did. I forgot the signature stating that you understand their right to audit you was the affirmation document. I did have to sign it back in November or December.
Make sure you check your spam mail and all of your gmails for your pin. I received my pin in an email titled “USC has received your application.” If you can’t find it maybe think about calling the admissions office if you for certain can’t find your information (however they may ask for the pin number before you ask, so it might not help). Just tell them your name, when you applied, what major and your issue. I know it’s not really a great idea to contact the admission office and telling your name, but you’re going to have to if they are to find your information for you, so do this as a last resort.
This is my first year applying, so I am not an expert, but I have had to call or email almost every school due to some miscommunication on their website, slideroom issues, or missing information and I learned that it is best to get the problem solved as soon as possible rather than waiting for it to fix itself. Especially because I don’t think USC will consider applicants who do not sign the affirmation document.
Hope this helps.