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

testflight  I recently discovered how to create public links for Testflight invitations in iTunes connect and TestFlight Articles · Apple Releases New Versions of TestFlight and Xcode With Vision Pro Support, Starts Accepting visionOS Apps · TestFlight

Additionally, TestFlight has enabled open beta testing through a public opt-in link You can assign different builds to test for each group, ดาวน์โหลด Testflight for Android Helper APK สำหรับ Android Beta Testing Made Simple with TestFlight tips

TestFlight Made Simple: How To Upload & Manage An App On TestFlight Discover how you can use TestFlight to improve your app experience and ready it for release