Update: Apple’s System Status page now says that the iCloud outage, including problems with Game Center, backup, Mail, storage, web apps, and Photos, has been fixed. That said, some Apple customers on social media are still reporting issues, so Apple’s fix may not have resolved the situation for everyone yet.
Some of Apple’s iCloud services appear to be experiencing an outage, based on a multitude of reports that MacRumors has received and hundreds of complaints on Twitter.
According to the Apple System Status page, there are issues with iCloud Backup, iCloud Mail, iCloud Storage Upgrades, iCloud.com, iMessage, and Game Center. Some users are unable to log into the iCloud website, and others are having trouble with app-specific passwords or are seeing a message about an issue with connecting to Apple ID servers.
Read more at MacRumors.com