App is not logical. Once you start an order you can't change or add payment methods. You're locked into whatever setting you used prior. I had to log out and go to my profile settings to adjust payment instead of check out page. I'm sure you've lost orders because of this. Also you need to get the timing option sorted out. Everytime I use QUICKEST, the order cancels and says that option isn't available. Cumbersome app that ticked me off