Where do I start

This app is very unreliable. I am tasked with having to support it and implement it in an environment with over 10k users. Many users are not able to even get enrolled, much less use the app. Then the ones who do have the app complain about its constant crashing.Check all the logs and everything looks clean, no errors what so ever. To my end users, I am truly and deeply sorry for any pain that you are about to go through.

Jm0498 about BlackBerry Work