You posted in the TripleA support category, that is unrelated to the (mobile) game you are talking about.
So I have moved your topic to the related forum category. As you can see this topic has been brought up and answered before.
Maybe you find some interesting information there:
https://www.axisandallies.org/forums/topic/41426/unhandled-rejection-error-iphone
https://www.axisandallies.org/forums/topic/41487/apple-ios-failure-to-load-game-board-resets-gameplay
Topic closed as duplicate