ERR_NGROK_3104: The email "EMAIL" associated with your PROVIDER account is not valid

What does ERR_NGROK_3104 mean?

ngrok returns ERR_NGROK_3104 with this message:

The email "<EMAIL>" associated with your <PROVIDER> account is not valid.

Correct your email with <PROVIDER> and then refresh this page.

Troubleshoot ERR_NGROK_3104 with your AI agent. Connect it to the ngrok MCP server, then ask what caused the error and how to fix it.

Email support@ngrok.com and include the error code.