If you are experiencing any problems with iCloud sync, please look through these common problems associated with iCloud Sync.
Error Message: Verify your iCloud Credentials
If you receive the error 'Verify your iCloud Credentials' while trying to add an email account using iCloud Import, please check the following:
1. Tap on Settings on your iOS Device
2. Scroll down to iCloud and tap on it
If iCloud is not setup on your iOS device, please do it now. For help with this, visit http://www.apple.com/icloud/setup/ios.html
3. Tap on iCloud Drive
If iCloud Drive is not enabled, enable it now.
4. Enable Airmail App to use iCloud Drive.
5. Go back to Airmail and try to import your accounts.
Error Message: Disabled by System
If you see an error 'Disabled by System' in Airmail's Settings, please follow the steps above.