iPad Mini retina won't upgrade to 9.3 but prompts me to
My iPad Mini Retina (Mini 2) currently has iOS 9.2.1, but it has a badge-prompt in settings telling me to upgrade to 9.3. If I try to upgrade, it circles for awhile, then tells me it can't verify the upgrade. If I connect it to iTunes and ask iTunes to check for updates, it tells me that 9.2.1 is the current version. What gives? How do I get the device to stop reminding me to get an update it says it can't install?
iPad mini 2 Wi-Fi, Cellular, iOS 9.2.1