Codex/Desktop App Verification Uses an Unknown Phone Number I Never Added - Unable to log-in

What version of the Codex App are you using (From “About Codex” dialog)?

Version 26.707.51957

What subscription do you have?

Plus

What platform is your computer?

Darwin 25.5.0 arm64 arm

What issue are you seeing?

I created my OpenAI account in 2022 and later opened an API account. At some point, a phone number that does not belong to me was associated with my account. I did not add this number, cannot access it, and there is no option to change or remove it.

I can still access my ChatGPT account through the web, but when I try to sign in to the Codex app on macOS, I am required to verify the account by SMS or WhatsApp using that unknown phone number. No alternative verification method is offered, so I cannot complete the login.

<img width="385" height="453" alt="Image" src="https://github.com/user-attachments/assets/024c3529-d1d8-4ab6-82c8-c7dd66983d6d" />

What steps can reproduce the bug?

1. Open the Codex app on macOS.
2. Select the option to sign in with my existing OpenAI/ChatGPT account.
3. Complete the initial sign-in using the correct account email and authentication method.
4. Continue through the verification process.
5. The app displays a phone number that I do not recognize and do not own.
6. The only available verification options are receiving a code by SMS or WhatsApp.
7. Attempting to continue is impossible because I cannot access that phone number, and no alternative verification method is provided.

The issue occurs every time I try to sign in to the Codex app. I can still access the same OpenAI account through the ChatGPT website.

What is the expected behavior?

Expected behavior: I should be able to verify using my email, authenticator, passkey, or another method linked to my account.
Actual behavior: The Codex app only offers SMS or WhatsApp verification to a phone number I do not own or recognize.

Additional information

_No response_