I unchecked the link for myspace on require last name and email but i went back and tried?

and it still didnt work you needed a last name and email the link is unchecked why wont it work?

I unchecked the link for myspace on require last name and email but i went back and tried?
That's the annoying thing sometimes it resets by itself,but try clicking it as require last name save it then undo it and save it