You need to be logged in to your account to see and redeem your points.

Once you're logged in, when you go to checkout you'll see an option to redeem your points.

When you click Apply it'll use your points for a discount. 

Then click the "Manage Subscriptions" button. Or click here for a magic link.

Click the "Loyalty Points" button, then select "Redeem Your Points". These will apply a discount to your next order.

This will add discounted one time or subscription products to your next order. A great way to leverage your free shipping.