Apple does not give up applications because of this. I collect device UDIDs along with tokens in my applications that support push notifications, and all of them have been approved. UDIDs are just out of date , which means that Apple will ultimately not allow you to access them. Still working and will be approved.
I heard that Apple refused access to UDIDs so that developers and third-party analysts could not identify specific people. If this were truly due to problems with iCloud, Apple would obviously fix it, rather than hinder everyone else.
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