The overall rating reflects the current state of the app. It accounts for all app reviews but prioritizes the most recent ones.
Looks like a good app, but the pop up won't show on our store. Have tried Firefox and Chrome, desktop and mobile (with the cache deleted) and nothing.
I'm sorry to know that the pop up is not working on your store after trying different browsers and devices. I'll be happy to further assist you in the future once you've decided to re-install the app. Thank you.