Payments are transmitted through PayPal to the email address associated with your C2 account. If you already have a main PayPal account that is not your C2 email address, you can request that PayPal "link" the two email addresses. PayPal can then route C2 payments to your main PayPal email address. Contact PayPal for further assistance.
ADDITIONAL INFO: https://www.paypal.com/fm/smarthelp/article/how-do-i-add-additional-email-addresses-to-my-account-faq1686