can't access network admin link

Hi all

I'm a new wpmudev user. I just activated wpmu for my existing site. When I logged back in I got a bad password error. I was a bit surprised but as the site is relatively new, maybe I got it wrong. So did "forgot password". Logged back in with a new password. I saw the network admin link.

I now had two screens open - the original one and the one opened when I followed the link in the "change password" email. I closed one of the screens but now I didn't see the network admin link. I closed that screen and logged back in. No network admin link.

The tools -> option doesn't show "network" so does that mean it is installed and for some reason I can't access it?

Thanks
Lori

Any idea what I need to do / change / look for?