Lots of technical problems in the app. It takes forever to get everything you want in a cart and once you do, there's a good chance your order will be canceled or things will be out of stock. I've also noticed that when you move from the subtotal screen to the checkout screen, it adds tax to the subtotal, but then has a separate tax section where it adds the tax a second time. Updated: I gave GoPuff another chance, and about two hours after I placed my order, it was canceled.