Hi all, got invited doesn't mean that you can sign in to g+ service. Most of you might getting "google+ is in limited field trial", so in order to sign in g+ you have to keep refresh the page until you see a sign in page with you first and last name and a join button.

There is a script created for chrome browser purposely to do the refresh until the page show up, you all may read here http://forum.xda-developers.com/showthread.php?t=1153781

I got in g+ this morning with the script and chrome browser