If you were granted a free delivery or credit balance and want to check the amount or don't know how to use it, you can find all the information in the "Promo codes" area on your profile. Your promo codes will apply by default when you order your next Glovo. All unused credit after placing one order will be saved for your next order.
If you were granted a special promo code* from a store or advert, you can add it on the same promo code profile page and it will automatically apply to your next order.
*Bear in mind that these promo codes are subject to specific conditions and might expire.