Appium - what do I do? Please help!!!!

Morning all, Hoping for a little technical advice here, got an iOS app to test... think I've code signed it correctly using an enterprise Dev account which my team has added me too. I seem to be able to install the app on a simulator and as soon as IOS driver opens the app is closes... I found this guide online http://dentedghost.blogspot.co.uk/2015/06/appium-testers-perspective-for-ios.html?m=1 and followed it all the way through to Xcode 5.1.1 part, however due to my version of macOS I cannot complete. I have a call with developers today, can anyone help me out with what exactly I should ask them for? A Dev build of the app?? Spent literally all of yesterday on this :( Thanks Arjun

Appium - what do I do? Please help!!!!
 
 
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