The other templates download as you select and use them in your projects (assuming, of course, that you're logged into the program and you have a live internet connection).
If you right-click on one of the templates, by the way, you can also select the option to download the entire set at once -- which can take a while.
Yes, that's what I'm used to but only one template even shows up as an option.
I'd uninstall and then reinstall the program.
Don't worry. You won't lose any work in progress.