model is not supported when using Codex with a ChatGPT account.

[Kadagaden]

I downloaded Chatbox appimage a few days ago, logged into ChatGPT with OAuth, and chat just worked fine. Today I got this error message:

Connection to OpenAI API failed. This typically occurs due to incorrect configuration or OpenAI API account issues. Please check your settings and verify your OpenAI API account status, or purchase a Chatbox AI License to unlock all advanced models instantly without any configuration.
Retry

{
  "detail": "The 'gpt-5.4' model is not supported when using Codex with a ChatGPT account."
}

I tried logging out and back in, but still got the error. I tried other models, like 5-mini, 4 and so on, but got the same error with every model.
Using Chatbox appimage 1.20.3 downloaded from the official site.