First, you must create or log in to an existing 686 web account.
Next, you'll proceed to shop and add items to your cart.
Once you reach checkout, you'll see your credits displayed on the right side beneath your cart items with a "Choose reward" dropdown. If you didn't log in prior to reaching checkout, you're given the opportunity to do so here and afterwards you will see your credits available.
Simply select the level of reward you'd like to use - all options will be displayed but you can only select the rewards option(s) available to you based on your points - and see a discount code automatically applied!
Please note that loyalty credits can't be combined with other discount codes and don't apply to Insider PRO accounts.