Healing mountain crystals review for Buy Button channel

This app is great for use when you already have a website designed and just need to add buttons as a back end to allow the customer to checkout. The problem I ran into is that on any page of my website that doesn't have a buy button (like the home page for example and many others) then shoppers don't see the shopping cart. They have to navigate back to a page that has a buy button in order to check out, even if they've already added items to their cart. I called shopify about this issue twice looking for a solution or even a way to get the code for the shopping cart, so I can add it to a shopping cart button on the menu bar but they said that wasn't possible. Great app but has issues working seamlessly with my websites design, because it doesn't have a shopping cart button like paypal does.