Some users may have trouble accessing iCloud features as an outage affects syncing and other services for Mail, Calendar, Contacts, Photos, and Game Center. Apple is working on restoration.

Outages affect Apple services

Outages affect Apple services
Apple’s services rely on servers operated around the world by third-party companies, which can encounter issues. Apple became of issues affecting iCloud services at 5:49 p.m. EST on Tuesday.
Apple lists outages for Game Center, iCloud account and sign-in, Calendar, Contacts, Mail, iWork, and Photos. Find My also began experiencing issues at 5:50 p.m. EST.