Have no idea on what the reasons are behind crashing on IOS, but whatever investigations you are doing, the game has deteriorated badly since this morning. Every attack now leads to a crash which means constant restarting of game. I have worked in IT for over 30 years and am now involved in testing and whoever authorised the release of this and previous versions of code is nothing more than a charlatan and joker. I presume they wil be a contractor on a short term contract where responsibility is not part of their job description.

Meanwhile on Android, game is faster than it has ever been.