ERR_NGROK_PRIVATE_LINK_HOSTNAME_LIMIT_EXCEEDED: A private link can advertise at most LIMIT hostnames - ngrok documentation

What does ERR_NGROK_PRIVATE_LINK_HOSTNAME_LIMIT_EXCEEDED mean?

ngrok returns ERR_NGROK_PRIVATE_LINK_HOSTNAME_LIMIT_EXCEEDED with this message:

A private link can advertise at most <LIMIT> hostnames.

Where can I get more help with ERR_NGROK_PRIVATE_LINK_HOSTNAME_LIMIT_EXCEEDED?

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