I have a newly enrolled individual Apple Developer Program account (Team ID 798MLWU9L7) and I cannot upload my first build to App Store Connect. Every attempt fails with: Error 90034 — "Missing or invalid signature. The bundle 'com.gestaolocadoras2k.app' at bundle path 'Payload/....app' is not signed using an Apple submission certificate." I have already verified and ruled out everything on my side: The build is signed with a valid "Apple Distribution" certificate (a regular one, NOT a "Distribution Managed" cert). Entitlements show get-task-allow = false and beta-reports-active = true. I use a manually created App Store provisioning profile bound to that Apple Distribution certificate. WWDR intermediate certificates (G3 and G6) are present and valid in my keychain. I recreated the distribution certificate and the provisioning profile from scratch. It fails identically through BOTH Xcode Organizer AND Transporter (same error, Validation failed 409 in Transporter). My Developer Program membership is Active (renews July 2027). The "Free Apps" agreement is Active in App Store Connect; there are no pending agreements and no pending License Agreement banner. Apple System Status shows all relevant services operational (no outage). The account is ~6 days old and I have waited several days. Since the signature is valid and two independent tools reject it the same way, this looks like a backend account-activation issue rather than a signing problem. Could an Apple engineer please check my account? Team ID: 798MLWU9L7 Bundle ID: com.gestaolocadoras2k.app App Store Connect app ID: 6794145294 Thanks in advance.