Using Norton Safe Web to help validate site security

https://preview.webflow.com/preview/dimpledeedles?preview=5c8eb0f42fd6585e9e5ac6daa602ee78

I have created a new website and would like to validate it using Norton Safe Web (I’ve used that before on other sites I’ve created). I place their code into the head section on the home page, but it won’t validate properly and I’m not sure why (I’ve contacted Norton, but no response yet). They also offer a method of uploading an html file to the root folder - I wasn’t sure if that was possible with Webflow. Has anyone been successful doing this? or has anyone used another site successfully like WOT?