We've now resolved the issues with the Shopify POS schedule order tile. Please note, you may need to remove and re-add the tile in order to refresh the functionality. For further information on using our POS app tiles please see our Shopify POS guide.
We are investigating date picker loading issues on the 'Schedule order' Zapiet - Pickup + Delivery app tile on Shopify POS. This issue has been reported by merchants using European version of Shopify POS. We will post further updates as soon as our investigation progresses.