This app is seriously flawed. I shouldn't have to create a new grocery list every single time. It takes such a long time for something that should be so simple! I have created master lists multiple times and they never work! Every time I try to add to cart, it says that ALL my items are unavailable. But when I go and add each individual item, they ARE available. There has got to be a better way. Please make this app more user friendly. It is so frustrating.