Thanks everyone.
I can't find any options to download files or to email them to myself, and I can locate an option to enable Javascript but not Java on this computer. Cocoview doesn't work for me.
There were Mac instructions available when I started this process, but, as I said, they seem to have disappeared now, which makes me wonder if they're having Mac 'issues' . Anyway, I've emailed them again to see if they can do anything, and if not, then perhaps a refund might be in order. Shame though...
Many thanks again.
Nic