Reminders app stopped working
iPhone 5 (GSM) on iOS 8.3.
I noticed that my Reminders app wasn't syncing with iCloud via wifi or LTE, so I turned off/on the setting in iCloud. The app stopped working at all after that. When I open the app, nothing shows up at all, not even a default list. When I try to use Siri to remind me, Siri will say that the reminder cannot be made.
I tried restoring iOS then restoring the backup, same thing still happened.
iPhone 5, iOS 8.3