ERR_NGROK_SHIP_DOMAIN_PROVIDER_ZONE_NOT_FOUND: PROVIDER does not have ZONE, or its API access is turned off for that domain - ngrok documentation

What does ERR_NGROK_SHIP_DOMAIN_PROVIDER_ZONE_NOT_FOUND mean?

ngrok returns ERR_NGROK_SHIP_DOMAIN_PROVIDER_ZONE_NOT_FOUND with this message:

<PROVIDER> does not have <ZONE>, or its API access is turned off for that domain.

Where can I get more help with ERR_NGROK_SHIP_DOMAIN_PROVIDER_ZONE_NOT_FOUND?

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