I am setting up a new desktop. Firefox 29.0.1 is installed on all of my computers. I created a Firefox account and signed in on all computers. The new desktop shows that I am logged in (Under the settings menu, in a line above the Customize line), but no other computers have this line, although they say I am logged in. All computers have the "Pair A Device" link under Settings->Options->Sync except for the desktop. It does not have this blue link. I have set up sync many times on my computers, but never on one that does not have the blue Pair A Device link. How do I do this, and how do I get the line saying I am logged in to appear in the Settings window. All computers Windows 8.1 64 bit, and all Firefox v. 29.0.1 Thank you