App will not open? – Tracker Network Stats Review

So I have seen a lot of players using this app and I would like to be one of them. But the app will not open. It asks about notifications and I have allowed them. But I'm still not having any luck getting the app to open. I have iOS 10.3.3 but I am on an iPhone 5c. I still have 1.29 GB available so it shouldn't be a storage issue. What could be wrong?
Review by Cheath21 on Tracker Network Stats.