From the announcement:
All late pledges come with the same stretch goals as regular pledges. You will receive an email with your pledge manager link once the pledge manager goes live where you can enter your mailing address, add optional items (or even multiple pledges) and pay for shipping.
If you want more than one copy of HATE, please back once, and you will be able to increase your order in our pledge manager at a later date.
Please whitelist e-mails from “email@example.com” and add “firstname.lastname@example.org” to your contact list to ensure you do not miss this important email.