I have an app that is released and live on the store. I made some changes and resubmitted a new version. The apps update was rejected because it was reported to crash. After code review, still see no problems, I am unable to duplicate the reviewers crash using devices or simulator. How can I fix it if I can't see it?
Welcome to the forum.
What was the complete message from reviewer ? Did he tell on which platform ?
Does your app use network connection ? If so, are you sure it works for instance behind firewall ?
Of course, you should look very carefully to the changes you made since last release that was accepted. Have kept (that's a basic) the exact and complete project as it was for this last accepted review (otherwise you are in a very difficult situation).
In any case, you give so little information that the only advice is "review your code very thoroughly".
I was able to duplicate the crash by setting Xcode to build using “release” mode. Now I can see the crash and should be able to fix it.