Codex client auth forces WhatsApp code to a dead number — but ChatGPT/Codex web log in fine (Case 09491223)

It looks like OpenAI has enabled SMS verification, but they couldn’t care less whether users can actually access their old phone numbers. They haven’t even provided an option to update them! I just relocated from India to Singapore for work, and my old Indian number was deactivated ages ago. Now I’m stuck in Singapore, completely unable to use ChatGPT to kick off my work. This is beyond frustrating!