In case your API order resulted in "Params.from_address.country: Must be at most 2 characters long" error, don't panic! 🙌
It means that Origin Country format is not correct.
Proceed from WooCommerce > Shipping > ShippyPro Live Shipping rates > Origin Country, it needs to be in ISO format, e.g. IT, ES, DE etc.
Done! 🎈