Is there a way to add coupon codes on wix-api
when wix payment startPayment() loads, the coupon code is already deducted to the total price displayed on wix payment.
I don’t see clear documentations regarding to it. also the tutorials are not working
https://support.wix.com/en/article/velo-tutorial-using-the-pricing-plans-api-for-pricing-plan-ordering-and-payment