ERR_NGROK_1227: The number of login attempts with this email has been exceeded, please try again later - ngrok documentation

What does ERR_NGROK_1227 mean?

ngrok returns ERR_NGROK_1227 with this message:

The number of login attempts with this email has been exceeded, please try again later.

Where can I get more help with ERR_NGROK_1227?

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