Hello, I’m experiencing a persistent App Store Connect upload issue that seems unrelated to my project. Every upload is rejected with: Validation failed (409) Missing or invalid signature. The bundle is not signed using an Apple submission certificate. (Error 90034) What I have already verified: Apple Developer membership is active. I am the Account Holder. Apple Distribution certificate exists and is valid. App Store provisioning profile was recreated. Automatic signing is enabled. Archive is exported using “App Store Connect” distribution. The exported IPA is signed with Apple Distribution (verified with codesign). I tested both Xcode Organizer and Transporter. I created a brand new native Xcode “Hello World” project, and it fails with exactly the same error. The project contains no frameworks, no CocoaPods, no Swift Packages, no Flutter, no React Native, and no embedded binaries. Since even a brand new Xcode project fails, I believe this is related to my Apple Developer account or App Store Connect validation infrastructure rather than the project itself. Has anyone experienced this before or knows what else can be verified? Team ID: 395DDXTXHC Thank you.