Pro account: 'Selected model is at capacity' on every model for 7 days — has the team seen this account-level pattern?

[zxc8976]

Cross-posting from issue #56324 for visibility, since this blocks Codex completely for affected accounts.

Since Oct 22, my ChatGPT Pro account returns 'Selected model is at capacity. Please try a different model.' on every model and every surface (Codex desktop app, ChatGPT, ChatGPT Work), with 50%+ of my usage allowance remaining. Full troubleshooting (password change, 2FA reset, 3-hour sign-out of all devices, VPN off, fresh sessions) changed nothing. Access briefly returned on Oct 26 for about half a day, then failed again on Oct 27 with no changes on my side.

Support case 18068890 was escalated to a human specialist on Oct 23; 100+ hours later there has been no human reply. OpenAI's Help Center ('About ChatGPT Pro tiers') says Support can investigate when access fails to return after a reset, and that users may request a review if an account was restricted in error — I have formally requested both in the case.

Several other Pro users report the identical pattern (see the linked issue and the OpenAI community forum). Questions for the team:

1. Is this a known failure mode distinct from ordinary model capacity?
2. Is there any account-level state the Codex team can check that front-line support cannot see?

Full details and timeline: #56324