One of my frequently visited websites has always had a CHAT button showing at the bottom of each page. Suddenly it has disappeared. I have contacted that page's support and they show me a screenshot that does show the button still active. My default browser is Chrome but I also see the same problem when I tried Firefox. MS Edge, however, did show the CHAT button. I've got to believe that I've got some setting causing the problem but I don't find it. Can someone walk me through this, please?