Photos added to the cart are automatically sized either as a 4x4 or 4x6 depending on whether the original image is square or a rectangle. However, simply choosing a different format will not remove the initial 4x4 or 4x6.
Should you only wish to order a 5x7, 8x8 or 8x10, tap on the unwanted format and use the — (minus) button to remove that size from your cart. When the number 0 appears between the — and + buttons and there is no number in the circle next to the format above the image, you will know that that format is not being ordered for that particular photo.
If you no longer want to order the selected photo at all, you can remove the image from your cart by doing the same thing. For each selected format (where a number appears in the blue circle), tap on the — button until you reach 0. When there are no copies selected in any size for a photo, a message will appear informing you that the photo is about to be removed from the cart. Tap “Yes” and the image will be removed from your order.
Alternatively, if you have selected TONS of photos and have multiple formats for each image, here’s a quick tip: return to your gallery by tapping on the < (back arrow found on the top left of your screen) and unselect the photos that have a red checkmark. The images will also be removed from your cart.