Apologies for taking so long to respond but I have been away with work, I have installed the quickstart again with the demo content selected and confirmed (It is the default) and still the same problem.
This is the same for both the Joomla 3 and Joomla 4 versions of the template for me on my home server which I think is probably the issue, just dont know what is stopping the packages being visible on enabling of the JA Demo Installer System Plugin