There is a workaround though. Make sure you check other WooCommerce Tips to help you build better eCommerce sites. If there are variations of the product, you can assign separate shipping classes for each product. More shippingzone discount coupon shipping zones here.
We are going to make a test order on my store. Sounds good? Our next step is to create a free shipping method in your shipping zones. Download Flexible Shipping. We can further limit how often our coupons can be used on the next tab, Usage Limits.