These are not real advertisements for the site, they are malicious phishing attempts. I've been trying to stop them from happening too. I deleted my history and cookies but they still pop up but only from w3school pages. There is malicious code somewhere that causes a redirect after awhile. The first one I got was vip.luckydevil.xyz and now I get a similar but different one. Both tell me I won something and need me to input information.