About Account Credit
Account credit can be gained primarily through referring friends to the WHOOP platform. When you have account credit, it will automatically be utilized on monthly subscription invoices before charging your credit card.
For example, if you have USD $60 in account credit, your next monthly invoice of $30 will utilize the account credit and your credit card will not be charged. You will have $30 in remaining credit to be used automatically in the next month's invoice.
Viewing Account Credit
You can view any account credit you have by going to app.whoop.com and selecting Membership from the menu. There you will see a row labeled Credit showing any current account credit.
In AUS/NZ the screen is shown in the below screenshot.