The plugin is designed to quickly and easily navigate between pages in Confluence (forward / backward / to child pages) without using the built-in "tree" of pages.
...
4. Note:
when creating new pages (which have not been saved yet) - plugin buttons are inactive.
...
It's important to know!
Navi for Confluence uses browser session storage to cache data received from the REST API (space hierarchy, last space modification data). This helps to reduce the number of REST requests and speed up the plugin.
The session storage functionality can't be used if your browser blocks third-party cookies.
To enable cookies for our domain, go to chrome: // settings / cookies and under “Custom Behavior” select -> “Sites that can always use cookies” and add our domain (https://navi.softlist.com/)
...
NOTE: you don`t need to do this steps in the Data Center plugin.