Beta from Crashlytics fail to install build on testers' devices

Question

I\'m sending my app to testers with Beta from Crashlytics which is an amazing tool to do app testing.

I had every new tester\'s device UDID registered in my developer ac

Answer 1

I've run into this problem back on iOS8 and just recently saw it again for iOS9, the only thing that solved the install issue was for my users to delete any previous version that they had downloaded, restart their phone, and try again.

You can also verify with them if Crashlytics properly installed on their iDevice, I've seen more than once where the configuration profile caused the issue, it's worth removing that (Settings -> General -> Configuration Profile (towards the bottom)) and retrying the install.