I had a little trouble logging into the seminar today too. But I had just changed my web browser. Have you changed your browser lately? This may be the problem. But once you download the plug-in it should work. I just downloaded the plug-in and it seemed to work fine.
As far as the login area, there is only one that I know of. For the user name you put your name and leave the password blank. Hit enter and you should be logged in. I noticed you said that you couldn't see your name. Did you leave it blank? If so, that could be why your name did not did not show.
Hope this helps some. Hope to see you at next weeks seminar.