I have realized that every time we use a coupon code, the calculation of the total value will come as a decimal number, and we can't receive the payment because our payment processor doesn't accept decimal numbers.
I have researched already on how to remove but I didn't find the information I needed to have rounded numbers on Checkout page.
Can somebody assist please? ? ?
The problem is based on the Currency (and payment processor) .. the Taiwan Dollar (and a few other currencies) don't have numbers behind the decimals (no cents). So we can display the products without decimals, but as soon we provide a % discount coupon, (as example a product costs NT$ 299,- and we give 10% discount (29.90) .. the amount that goes to the cart and checkout will be NT$ 269.10) so a amount with numbers behind the decimal.. then when the customer want to pay, the payment processor can't proceed, goes in Taiwan Dollar there are no numbers behind the decimal.