If you are trying to discount by item (rather than discounting the entire transaction), the discount will not appear when you tap the Discount button. To apply a discount to a specific item, you must:
- Swipe left on the item name first, then Add Discount.
- Select a Discount from the list. If you are prompted for a percent discount, enter the percent and select the check mark.
- If the price appears in blue, then the item has been discounted.