Custom hostnames are only available for Pro and Business paid plans. Failed to
bind the custom hostname <HOSTNAME> for an unauthenticated
client. Sign up at: https://dashboard.ngrok.com/signup If you have already
signed up, make sure your authtoken is installed. Your authtoken is available
on your dashboard: https://dashboard.ngrok.com/get-started/your-authtoken
If you're having trouble resolving this error, please reach out to support@ngrok.com.
Binding a custom domain such as customname.com requires a paid plan. Once you sign up for a paid plan, we'll give you an authtoken which you'll add to your ngrok agent. That will allow you to use custom domain.
Sign up for a paid plan at https://dashboard.ngrok.com/signup You will need the Pro or Business plan to use a custom hostname.
Add your authtoken from your account dashboard to your ngrok agent in your terminal.