If you haven’t installed the Facebook Pixel installed on your website and blog, you’ll want to do that today. Until that pixel is working on your website you can’t add people who visit your website to your MOFU Pixel Audience, and you're missing out on retargeting traffic that is visiting your website and blog.
If you’re unsure, you can use the Facebook Pixel Helper to determine which, if any pixels you have on your site. To learn more visit https://www.facebook.com/business/help/1700857106877546
To see your pixel in Facebook Business Manager visit https://business.facebook.com, click the hamburger menu in the upper left and you can choose Pixel from the Measure and Report Column.
To see your audience in Facebook Business Manager visit https://business.facebook.com, click the hamburger menu in the upper left and you can choose Audiences from the Asset Column.
You’ll see the audience created during setup named with the prefix you entered followed by pixelAudience. It is setup for the maximum of 180 days, but if you’re pixel isn’t installed, you may see “Not Ready” in the availability column.
The audience is used in the Middle of Funnel campaign to re-engage your website visitors and attract them back to your website, and take an action, be it completing the opt-in or making a purchase.
To learn more about Facebook Website Audiences you can visit https://www.facebook.com/business/help/610516375684216