ERR_NGROK_718: Your account is rate limited to MAX bytes incoming traffic per INTERVAL - ngrok documentation

What does ERR_NGROK_718 mean?

ngrok returns ERR_NGROK_718 with this message:

Your account is rate limited to <MAX> bytes incoming traffic per <INTERVAL>.

Where can I get more help with ERR_NGROK_718?

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