Errors with game. – Injustice: Gods Among Us Review

I completed ALL of the challenges required to earn Cat Woman Arkham Knight. However, after completing these challenges, I was opening the pack, and then the app closed itself. When I re-opened the app, all of the challenges I completed were not even started, and to add to that, I didn't even get the character...can you plz fix this because I really love this game, and that was a huge waste of time, and energy to finish it for nothing.
Review by jdhdhaiajshroqugehrr on Injustice: Gods Among Us.