Discount Codes for Multiple Shipping Address Orders
When shipping to multiple addresses, discount codes must be taken on the cart page prior to reaching checkout.
During regular single address orders, discount codes are entered in during checkout.
To enable discount codes for multiple shipping address orders, go to Giftship –> Ship to Multiple Addresses –> and scroll down to the Discount Codes section.
There you will see an option to Enable / Disable at any time.
This option must be enabled in order for discount codes to work with the multiple shipping address checkout process.