Codex sign-in asks for phone verification on paid account

Codex
1

Hi everyone,

I’m running into a confusing Codex login issue that only affects one specific ChatGPT account.

I can sign in to ChatGPT normally with this account using Google login, and the account has an active paid ChatGPT subscription. However, when I try to sign in to Codex with this same account, the login flow redirects me to:

https://auth.openai.com/add-phone

After I enter my phone number, I get an error saying that this phone number is already associated with the maximum number of accounts.

What makes this confusing is that my other Google/OpenAI accounts can sign in to Codex successfully without being asked to add a phone number. This issue only happens with my current paid account.

I have not knowingly used this phone number for OpenAI phone verification multiple times, and I do not know which accounts, if any, are associated with it. It is difficult for me to understand why this specific account is being asked for phone verification while my other accounts are not.

To summarize:

  • ChatGPT login works normally on this account.

  • The account is paid.

  • Codex login redirects to the add-phone page only for this account.

  • Other Google/OpenAI accounts can access Codex without this step.

  • The phone number is rejected as already associated with the maximum number of accounts.

  • I do not have visibility into which accounts are allegedly linked to this phone number.

Has anyone seen this behavior before? Is this likely an account-level verification flag, a recycled phone number issue, or something specific to Codex authorization?

Any advice would be appreciated. I also hope OpenAI support can clarify or resolve this, since the account is paid but I cannot use Codex because of a verification step I cannot complete.

2

Welcome to the forum!

Below each topic, you’ll find a Related topics section. Please search there first, as questions about sign-in and phones are common.

If you don’t find anything that helps, reply here to let us know you’re still having the problem. Please include what you tried and what didn’t work.

This may also be of value:

3

I’m also experiencing the same problem with my paid account in Vietnam, and it’s incredibly frustrating; it’s significantly impacting my work.

4

I’m also experiencing the same problem with my paid account

5

I got the same issue when I ran the codex cli on hermes agent. My codex cli is running on a VPS, not my local machine. But now I can not log in my paid account.

6

Hey, apologies for this inconvenience. We will need some personal details to identify the root cause for this issue. can anybody from the thread please open a support request at support@openai.com and share a screen recording/screenshot of what you see when you try to login and your account details.

Once you have submitted the support case, please share the case id/case subject here so we can track it and troubleshoot the issue for you. Thank you!

7

Hi There, i just sent a email, i also got this when trying to log into Codex.

Thanks.

8

this is my case id 09372957

9

Still locked out, support is just saying that i need a phone to continue.

Case number: 09273001

10

Case Number: 09489616

11

I have submitted the support request. The case subject is: 09492856

12

Hi There, i just sent a email, CASE NUMBER：09506400

13

I sent an email and require quick fix .
Case Number: 09512384

14

Facing the same issue, I sent an email.
Case Number: 09512410

15

Facing the same issue, I sent an email.
Case Number: 09491644

16

Facing the same issue, I sent an email.
Case Number: 09522312

18

Hey, Im facing the same issue. Im just locked out of codex..after logging in by entering otp via my authenticator app, the page redirects to this sms otp page and just automatically states that we cant send message to your phone. There’s no workaround. Its really frustrating!!

My Case Number: 09526369. Shared both HAR and screenshot there.

19

Case Number: 09508922
Date: 3/6/2026
Country: Malaysia
Currently not able to enter the verification code cuz too many request.
Phone number still not able to receive the verification code.

20

Facing the same issue, I sent an email.
Case Number: 09539254

21

Facing the same issue, I sent an email.
Case Number: 09532636