If you’ve published a Root Domain or a Subdomain to Feature.fm and want to run Facebook Ad conversion events on those URLs, you’ll want to verify the domain on your Facebook Business account and verify that with your registrar. This step will not happen on Feature.fm, but instead, where your domain is registered (like GoDaddy, Squarespace, Google Domains, Wordpress, etc.) and on Facebook.
You’ll first add the domain in the Business Settings of your Facebook Business Manager.
After that, follow the steps here to verify your submission.
NOTE: if you are using a custom subdomain, you will want to submit for verification the root domain to Facebook. For example, if your subdomain is music.yourdomain.com then you would submit yourdomain.com for verification.