One of the first places you might look for status information is in the HOME section of the interface.
To confirm licensing status
Look for Content Filtering in that pane.
This example shows that Content Filtering Service is currently not licensed. You can click on the License? link to go to DEVICE | Settings > Licenses to renew or activate the suite of services with Content Filtering in it.
If your CFS license is active, you can also go to HOME | Dashboard > System > Security Services tab. Scroll to the Content Filter pane to see the details of the license.