How to apply checkout discount code on a Flutter app?

[MohsenNMZ]

Hi, I am using Shopify on the flutter app. I was using this syntax to add the checkout code:

shopifyCheckout.checkoutDiscountCodeApply(
            checkoutId, _discountCode);

Since last night it does not appear anymore on the checkout page and customers need to add it manually.

[WeFish_Shop]

It happens to us exactly the same, since last night we cannot do this process, and we have many users asking about the error.

[MohsenNMZ · Accepted solution]

The problem got solved by the Shopify team and it is working now.