Discount code is not applying in cart

Retired Boards Appdev Customers Discounts And Orders
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2

The issue is that you’re using a deprecated method of applying a discount code to your checkout.

Use this

baseURL/discount/DISCOUNT_CODE?redirect=/checkout

instead of this

/checkout?discount=DISCOUNT_CODE

Something like that:

let baseUrl = window.location.protocol + "//" + window.location.hostname;
checkout.attr('href', `${baseUrl}/discount/${discountCode}?redirect=/checkout`);