There are two simple methods available to check whether the SessionCam recording tag has been added to your site
Visit the page in question and open up your browser Development Tools by right-clicking on the page and selecting ‘Inspect’ - in this example we're using Chrome
Within the ‘Elements’ tab type ‘sessioncam.recorder’ into the search field and press return.
If this is not present this means that the tag has not been added to the site. If you used a tag management platform you may want to confirm that the tag has not just been added to the relevant container, but has also been published.
See here for more info on using a tag management platform.
Visit the page in question and inspect the page as described above...
Within the 'Network' tab filter the page network events by 'sessioncam' and refresh the page; if the tag is present and firing on the page you will see a filtered list of the associated SessionCam tag events... the presence of the 'sessioncam.recordr.js' even indicates that the tag is present on the page.
See here for more info on SessionCam tag events