If you have pre-ordered apples before July 15, 2021, you would have received 'gift card' in your email.
Use the gift card code in the box provided in the checkout page as shown below in the screenshot. You can use multiple-codes in the box. Apply one code at a time and the enter the next one after the code is applied.
In case of any difficulty, contact us from https://www.tonsvalleyapples.com/pages/support
Enjoy your apples!