problems with Mercado Pago

Hello guys, good day, I am having problems with my clients’ gift cards and when a client buys a gift card everything works fine, the problem comes when the person who received the code wants to use it, within WooCommerce it does work when applying the discount, but when you proceed to go to the payment market, the client is charged as if the card had not been applied, that is, the total amount is charged

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