The overall rating reflects the current state of the app. It accounts for all app reviews but prioritizes the most recent ones.
It does not work. You keep inputting products and saves but does not retain what you save. Also as in other ones, if you go to view the app in the shopify store, it shows your signed in on that store but when you open the app from your shopify dashboard, what your actually signed in as the other work which of course does not retain what you have been manually inputting. These apps on cross selling still has a lot of development that is needed. Makes sense why there's only 3 days of free trial so your stuck to the charges on the second week,.