I am not able to sign-in to App Store or TestFlight with my Apple ID

testflight How to setup iOS app with Apple developer account and TestFlight from scratch · Prerequisites · Certificates, Identifiers, and Profiles · Configure App in XCode

How Does TestFlight Work? · Notified: The user has received an email from the TestFlight system inviting them to test the build · Accepted: The testflight App with DeviceActivityReport extension either won't install on device or won't upload to TestFlight We have integrated DeviceActivityReport into our Family