@dunlix either way, if you don't have a config.json, it starts the web installer:
Permissions for a custom page
Is it possible to setup permissions for a custom static page?
I have limited it so users must be logged in to see the link on my header, but if they save this as a bookmark or remember the URL, that can bypass requiring to login
I would like to set user must be logged in to see the content on page
I don't think so. This is something to bring up on the plugin's Github page.