Hello ALLTHATISBLUE, You can find your one-time use code at https://www.bungie.net/triumphs you need to log in to see it, then visit bungiestore.com. Create an account or log in to an bungiestore.com account, if you have already made one. Visit the Year Two Moments of Triumph T-Shirt product page. [url]http://bungiestore.com/collections/featured/products/year-two-moments-of-triumph-t-shirt[/url] Enter your desired customized text to be displayed on the left side sleeve, and then add the shirt to your shopping cart. At checkout, enter your code in the "Gift card or discount code" field, on mobile at the top you have to click show summary enter your code in the "Gift card or discount code" field, and press "Apply". The price of the shirt is u.s. $ 777,772.77 the discount code will lower it to u.s. $24.99 without personalization u.s. $29.99 with personalization. Year Two Moments of Triumph Donation T-Shirt FAQ. https://www.bungie.net/en/Help/Troubleshoot?oid=44923