ERR_NGROK_436: The certificate of a reserved domain with a managed certificate policy can not be detached directly, instead the managed certificate policy itself should be detached - ngrok documentation

What does ERR_NGROK_436 mean?

ngrok returns ERR_NGROK_436 with this message:

The certificate of a reserved domain with a managed certificate policy can not be detached directly, instead the managed certificate policy itself should be detached.

Where can I get more help with ERR_NGROK_436?

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