My developer account cannot register any App ID at all. Every attempt in Certificates, Identifiers & Profiles fails with: "An App ID with Identifier 'X' is not available. Please enter a different string." Facts: This happens for EVERY identifier I try, including deliberately random test strings such as "music.sonicoracle.zzztest" that cannot plausibly be registered to another team. So the identifiers are not actually taken. My Identifiers list is empty — nothing has ever been registered on this account. Certificate creation works normally (Apple Distribution cert issued without issue), so the account is otherwise functional. The failure has persisted since my membership activated on July 27 (Individual enrollment, paid, active), and continued unchanged after my account completed a full re-verification (legal address change, identity re-confirmed) on August 10. Free Apps Agreement active; Paid Apps Agreement signed and processing; all tax forms active. The identifier I actually need is "music.sonicoracle.app" for my own domain (sonicoracle.music), but the issue is account-wide, not string-specific. Developer Support case: 20000121583142 — so far I've only been pointed to documentation, which doesn't apply; the registration flow is being followed correctly. Team ID: K3R4Z7DT76 Has anyone seen an account-level App ID registration failure like this, and is there a way to get it in front of the team that can inspect the backend state of the account?