ERR_NGROK_3165: PROVIDER is too busy to handle requests and authorization cannot be completed at this time - ngrok documentation

What does ERR_NGROK_3165 mean?

ngrok returns ERR_NGROK_3165 with this message:

<PROVIDER> is too busy to handle requests and authorization cannot be completed at this time.

Where can I get more help with ERR_NGROK_3165?

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