App review rejection - AppTrackingTransparency

Cross posting from iOS Platform thread.

I'm running into an issue during app review that I'm unable to reproduce and should, as far as I'm aware, be solved and working correctly. I'm not getting any details from the reviewer regarding the specifics so shooting in the dark here.

The problem being I'm already using the AppTrackingTransparency framework via Unity.Advertisement.IosSupport in Unity 2019.3.11f. I am however targeting "minimum iOS Version13.0". Does this require me to only target 14.5?

Launching my app on iPhone 6s running iOS 14.5.1 successfully prompts the permission request to "Allow app to track your activity across other companies' app and websites?". This is called during a "fake" splash screen scene right after the Unity splash screen and before the main scene is loaded that uses unity ads, analytics, and login functionality etc..

The only feedback I got back beside a reference to the guidelines is:

Now there are a couple ways I know the permission request will not be shown in my current implementation:
1.) The first being if the user has "Allow Apps to Request to Track" in their iOS settings disabled. Re-enabling this setting will prompt the permission the next time the app is started.
2.) If the user is not on a version of iOS that supports the app tracking transparency framework. Running it on iOS 13 does not prompt the permission request.

I'm assuming both of these are working as intended?

So what am I missing? Am I doing something wrong here? Is there another permission I'm unaware of that needs to be prompted?

Update* Apple finally replied, they are running on iOS 14.6 on hardware... That's all the info I get.

 

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