And the "Update outdated hosts" selection in the viewer seems to be hit or miss - sometimes it works, sometimes not, sometimes if I run it three or four consecutive times for a given host it will finally work.
The Simple update feature works for version 188.8.131.52 onwards. If you attempt to update earlier Hosts, it won't work on them because older Hosts simply don't have the code that would process the update (make it happen).
The task manager shows that the admin console is running. It should be in the system tray, perhaps hidden by the expanding arrow. Could you please check that? If you see the server icon (a black and yellow monitor + mouse) , single-click on it to bring up the Admin Console window.