Have you filled out your W-9 form? The US government requires that you fill one out before we send you money. We post alerts for people who are owed money if they log in and they haven't filled one out.
You can fill one out by logging into C2, click your name in the upper right corner and select GENERAL ACCOUNT SETTINGS, and then go the TaxPayer ID tab. Once that has been completed you will receive all owed payments via PayPal at the next distribution date which is around the 20th of every month.
(If you are not a US citizen, you will see where to click.)