classic checkout2 api integration1 block checkout1 checkout delivery1 conditional logic1 custom fields1 delivery notes1 delivery quotes1 discount rules1 fee rules1 field builder1 gift wrap1 last mile delivery1 local delivery1 order meta1 order tracking1 proof of delivery1 same day delivery1 scheduled delivery1 shipping zones1 uber direct1 vat number1 webhook integration1 woocommerce delivery1 woocommerce shipping1