Apologies for the delayed response, we have only just seen some of these forum posts.
The Store Pickup + Delivery app is incompatible with accelerated checkout methods, such as Apple Pay or GPay, on product pages. This is because these payment methods allow the customer to bypass our app situated on the cart page. It is possible to leave this methods active on the cart page, and the buttons will only become active when the preferences from our app have been selected.
If you need any more assistance or information you can email us at email@example.com, you can also start a live chat via the Support tab in the Store Pickup + Delivery app or by visiting www.zapiet.com.