There is nothing to track: The Science of Breath is a digital PDF with instant access, and no package is shipped.
Right after your payment is confirmed, your purchase details are sent to the email address you used at checkout. That message is the way back to your book and your receipt.
Check your spam or promotions folder and search your inbox for “Whop”, since the confirmation comes through our checkout provider. Make sure you are looking in the inbox for the same email address you typed at checkout.
Still stuck? See Contact and we will help you get to your copy.