Why only to have sync with this specific plugin and not with the built in WooCommerce coupons functionality? Meaning be able to read already existing coupons and apply them? I don’t see the need to pay almost 100 extra euros to have this plugins to use something already built on woocommerce.

Hi Michael, this feature is currently available via our new WooCommerce Smart Coupons integration!

We just launched this in Beta for Pro users and above, and you can find out more in this Knowledge Base article: