ERR_NGROK_5518: PROVIDER rejected authorization with access denied: DESCRIPTION

What does ERR_NGROK_5518 mean?

ngrok returns ERR_NGROK_5518 with this message:

<PROVIDER> rejected authorization with access denied: <DESCRIPTION>.

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Troubleshoot ERR_NGROK_5518 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.