SC login modal popup and dropdown

Hi, I've been using the sc login button on my homepage. It works fine the past few days but when I checked it today, the dropdown button of the logged in user won't show. When I click the dropdown menu, the address bar shows my "mywebsite/#" address. Even my logged in user greeting font became another color but it was white before. I also use the jfb connect but I just installed it. Can this be the conflict? Hope you can help me with this issue. Thank you