debug working iPhone unity app

I have a unity app that is built for both Android and iPhone. They have both been approved and are live on the app store, however the iPhone version crashes on the main scene. We have deveoped it on PC, and use an iOS upload tool so it isn't possible to test or get debug logs back. We think it is something to do with location services, as the scene that crashes requires location and uses a plugin ([login to view URL]) which works great on Android but we don't know if this is the issue, we will supply the full project file and need someone just to debug what is causing the crash in order for us to get it live, this should be a very quick job for a unity developer using iOS so please bid accoringly, there will be follow on work if you can find / fix the issues. It is working on Android so must be something IOS specific, and hopefully a very trivial fix.