OpenAI reported elevated errors across ChatGPT, Codex and the API for about 5 and a half hours
Some requests failed across ChatGPT, OpenAI Codex, the OpenAI API including the Agents API, and ChatGPT Work. OpenAI said some users also had trouble logging in or signing up, and some tasks did not complete. It's resolved.
Source
"Some users may experience failed requests, difficulty logging in or signing up, and tasks that do not complete."
Published