Woocommerce validation error when 100% off coupon is used

Hi there,

we’re using Woocommerce and have the checkout validation enabled. When we give someone a 100% off voucher, then no captcha is shown (because there is no payment form) but it is validated on submit and thus a user can never complete the purchase when the cart total is basically 0 and no payment provider is needed.

It’s the same if someone was to use Woocommerce Subscription and a user is downgrading from a more expensive subscription to a cheaper subscription where the cart total is 0 in this case as well.

Would it be possible to maybe not do the recaptcha check when the cart total is basically 0? Or when no payment data was entered? Or provide some other workaround?