OK, I didn't get this so far....
I'm using IE or Firefox.. Maybe this can help.
In the meantime, I do prefer going another route for settings.
Try this if you loike:
Go to Administration, then click on "Course list", and then click on the pencil icon.
You can change the laguage, access to the course and so on.
For tools visibility, you con do it by clicking on the eye nearby the icon in the course itself. I don't know how to configure each tool though, as you are right this is mainly where you do so.
This should be somewhere in maintenance menu.
Did you install the platform from scratch, or did you install it by copying parts, which could expalin the issue....
126.96.36.199 shouldn't react as it does here.... Are you sure about PHP version, and your server settings (enough disk space)...
This is all I can think of so far.