1) Login to your LGF account by clicking icon on the top-right of the website, Once logged in you will see the history of past purchases, click on "manage subscriptions" on the right side
2) Click on "Add a product", so you can either add another subscription product or a one-time product to your upcoming subscription
3) Choose the product(s) you want to add to your upcoming subscription renewal by choosing to add it as a recurring / autoship item or a one-time only product.
4) If you have rewards, you can add the code to your subscription