- Node Red instance is a running installation of node red.
- For TTN webhook to send data to your node red you need to tell it where node red is running and that node red must have a public IP adres so TTN webhook can connect to it.
- Do you know what node red is? If not go Google it and find a place that offers node red hosting at a reasonable price. TTN will not provide it for you, you need to set it up yourself, plenty of tutorials on the internet on how to do it and some cloud providers provide it preinstalled.
Then may-be when you found how to do it you can write it for others.