Hello Simon,
Thank you for your feedback!
One more thing came to mind that might help you. Have you tried using the ‘Allow free shipping’ option? This can be enabled when editing the product that serves as the coupon, as shown in the screenshot below:
https://flexiblecoupons.net/wp-content/uploads/2024/05/flexible-coupons-pro-product-settings.png
If this option is activated, it allows the coupon to grant free shipping. Just make sure that the “Free Shipping” method is set up correctly in your WooCommerce settings, and that the coupon requirement for free shipping is included in the shipping method.
I discussed this scenario with our developers, and unfortunately, direct shipping cost coverage is not possible as WooCommerce currently does not support this functionality.
Maybe using the free shipping option will be sufficient for your use case?
Let me know if this helps, and feel free to reach out if you have any other questions!
Kind regards,