I had the app running on the phone (5S with ios 9 on it).
Today I added CloudKit code to simply save a few records to the db. That will not run in the Simulator. I did configure my iCloud creds and that made it stop saying I needed auth, but then it put up an error that access was denied based on the user.
Running on the phone, it never even loads. Then the phone is basically hung. I try to term the app but it's not running. If I disconnect and reconnect I can start the cycle again.
The devices screen says the phone is 'busy validating' the application.