It was good before...

This was a great game for a long time, i played it with my buddy alot! Then this new update came out, and everytime i try to go to online mode, it crashes the game. Also, when i foumd a car, i clicked the icon to get in, then the game crashed. I use a iphone 6, so can you guys please fix this problem?

Krobler about Experiment Z: Zombie Survival