If you’re unsure if a promo code was applied to an ongoing order, please wait until the order is complete.
Promo codes can only be used once. Any leftover credit on a single promotion does not apply to future orders. Also, each promo code has its own terms and conditions, so make sure you’re using it in the applicable location, currency, and before the expiration date.
You can learn more about how promo codes work in this help article.