wouldn't do anything. Anyone have any idea what the problem is?
@jimjams @Nick_H Shopify checkout additional script doesn't allow custom script
you can see Official document here- what you can do with addition script https://help.shopify.com/en/manual/orders/status-tracking/customize-order-status/order-status-javasc...
It works, but it's important to point out that the code in the "Additional scripts" field only gets added to the checkout thank you page. It's mostly intended to be a place to add conversion tracking code or a short bit of custom HTML/messaging.