Login Logo Not Displaying on User Sites

If i understand correctly, this plugin should show the image i have uploaded on the login screens for the entire network. Maybe im wrong, just let me know. But the way its working now, is that if you sign in at my main site, it shows. If you go to a user site to login, there is no logo at all. WordPress logo is gone, but mine isnt there either. If you hover over where it should be, it shows the Alt text, so its seems like something is just missing. Any ideas?