A discount is not applied at checkout

Why a gift, discount or code may not apply at checkout: status, stacking, code rules, currency and Shopify's discount limits.

Status and schedule: The offer must be Live with dates that include today, and inside its weekly window if Repeat weekly is on. Pause all offers also stops everything.
Rules: Compare the cart with the Trigger and Eligibility steps. Use Test with a cart in the editor menu to see what applies; it needs a saved draft.
Stacking: An offer above yours with Stop lower offers on can keep yours from running. Combination settings also decide what can apply together. See How offers stack.
Codes: Check the code is active, within its dates and uses, and that products were added from a page counted under Where it works. After too many unknown codes, matching pauses for a few minutes, and Home says so.
Currency: The checkout upsell shows nothing when the checkout currency differs from the store currency.
Checkout logic: Open Diagnostics. If a discount that Freebies Engine by Log Studio Lab created was removed from Shopify, select Republish all.
Shopify limits: A store can have at most 25 active automatic discounts, including other apps. See Discount limits.

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