How do I disable the new order confirmation numbers beta feature?

[Shawn17]

Context: we have been having issues with one of our apps called Zapiet Local Deliveries not applying the right rate at check-out. I have contacted them about it. 

The app developers claim the issue is related to Shopify's new order confirmation beta feature and that I need to get Shopify to disable it. I have contacted shopify about this many many times through phone, live chat and email and they have been unable or unwilling to provide any help whatsoever.

Does anyone know how to do this?

Thank you!