My iPad Air 2 (Cellular) isn't getting the option to upgrade to iOS 10. Everytime I check for an update it says its on the latest, 9.3.5. My iPhone was able to upgrade to iOS10, my Watch was able to upgrade to watchOS3, and my Macbook was able to upgrade to macOS Sierra. Just my iPad stuck on the older OS. Anyone else have the same issue or was able to get it updated?