This add-on is constantly trying to sell you the paid subscription, in a quite invasive way. Not useful for installing it to a non-IT-proficient person. Additionally, there are not so many site reviews, and I don't find them very useful or trustworthy either. After testing it for few days, I've decided to uninstall it.
Hey, WOT is a freemium service and most of our features are offered for free. Our premium package offers advanced features such as Anti-phishing, Real-time protection and many more features to keep you protected online. We encourage you to contact us directly so we can assist in upgrading to the premium package 🙂
