New account: every build upload fails with 90034 "not signed using an Apple submission certificate"

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.

New account: every build upload fails with 90034 "not signed using an Apple submission certificate"
 
 
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