On April 22, beginning at 7:00 a.m. (PDT), iTunes Connect and related content delivery services will be unavailable for up to eight hours.
The following services will be affected:
● App build upload in Xcode
● Application Loader and altool
● iTunes Connect
● iTunes Connect Mobile
● iTunes Producer
During this maintenance window, you will not be able to submit new content or make changes to existing content. Make sure you have completed any critical deliveries or changes before this date.