This is what I got from the email:
Guideline 2.5.4 - Performance - Software Requirements
Your app declares support for audio in the UIBackgroundModes key in your Info.plist but did not include features that require persistent audio.
Next Steps
The audio key is intended for use by apps that provide audible content to the user while in the background, such as music player or streaming audio apps. Please revise your app to provide audible content to the user while the app is in the background or remove the "audio" setting from the UIBackgroundModes key.
Guideline 2.5.4 - Performance - Software Requirements
Your app declares support for location in the UIBackgroundModes key in your Info.plist file but does not have any features that require persistent location. Apps that declare support for location in the UIBackgroundModes key in your Info.plist file must have features that require persistent location.
Next Steps
To resolve this issue, please revise your app to include features that require the persistent use of real-time location updates while the app is in the background.
If your app does not require persistent real-time location updates, please remove the "location" setting from the UIBackgroundModes key. You may wish to use the significant-change location service or the region monitoring location service if persistent real-time location updates are not required for your app features.
Resources
For more information, please review the Starting the Significant-Change Location Service and Monitoring Geographical Regions.
The problem is I don't have either audio or location service key checked in my info.plist, but still get a rejection from Apple for 5 times, and the call from Apple Review Team (I submitted appeals)keeps telling me about the same thing, which is to remove those 2 keys. What should I do?
Guideline 2.5.4 - Performance - Software Requirements
Your app declares support for audio in the UIBackgroundModes key in your Info.plist but did not include features that require persistent audio.
Next Steps
The audio key is intended for use by apps that provide audible content to the user while in the background, such as music player or streaming audio apps. Please revise your app to provide audible content to the user while the app is in the background or remove the "audio" setting from the UIBackgroundModes key.
Guideline 2.5.4 - Performance - Software Requirements
Your app declares support for location in the UIBackgroundModes key in your Info.plist file but does not have any features that require persistent location. Apps that declare support for location in the UIBackgroundModes key in your Info.plist file must have features that require persistent location.
Next Steps
To resolve this issue, please revise your app to include features that require the persistent use of real-time location updates while the app is in the background.
If your app does not require persistent real-time location updates, please remove the "location" setting from the UIBackgroundModes key. You may wish to use the significant-change location service or the region monitoring location service if persistent real-time location updates are not required for your app features.
Resources
For more information, please review the Starting the Significant-Change Location Service and Monitoring Geographical Regions.
The problem is I don't have either audio or location service key checked in my info.plist, but still get a rejection from Apple for 5 times, and the call from Apple Review Team (I submitted appeals)keeps telling me about the same thing, which is to remove those 2 keys. What should I do?