“My friend’s code doesn’t work for me.”

A discount’s customer eligibility can be all customers, or specific customers or segments. The code then works only when checkout knows the customer is one of them. A guest gets “isn’t available to you right now”: the same words as for a code that’s only for another market, which is why the message alone can’t tell you which it is.

VIP20 is a lab code for one customer. On 24 October 2026, typed into a guest cart with one Hydrogen board, it got the sentence above, and the cart stayed at $590.00. Priced as the customer it’s for (16 October 2026), the same code applied: $480.00.

The same $590.00 cart with another code typed gets another sentence: LABOLD10 (it expired), NOPE123 (no discount uses it) and WAX15 (it’s for other products). Checkout shows the same $590.00 every time.

• Whether each discount is for all customers, or for some customers or segments.
• A test cart is a guest unless you price it as one of your customers (Pro and Business). A guest never gets these discounts; a customer gets them only if eligible, and the sentence says which.
• For a customer, the app reads only their ID, tags and number of orders, never their name or contact details.

The discount’s customer eligibility, in Discounts: which customers or segments it’s for. Then whether the customer is one of them. To see the price they’d get, price the cart as that customer in the Simulator.