My account page has a section stating "You have a store credit balance of $10.00 that you may apply toward future purchases." but there is no indication of how to redeem the credit. Is this accurate and if so how do I redeem the credit?
On the My Subscriptions page, there should be a check box option to "Use store credit."
If you are placing a non-subscription order, you should have the option to apply store credit in Step 3 - Payment Method of the checkout process. You may have to click back into it for the option to show up.