Buy Button channel

This app needs work. For us clicking the BUY Button would be best if the products go in to a shopping cart on our website (instead of a cart on the blog) ,then customers would have access to all our products. This limits them to purchasing only the products listed on our blog. It also has issues that are not the best when a product has variants. We tried it, but it was not something that worked for us. Looking for something else that will work for us.