R.F.G. Cameron a.k.a. Sphinx
My work can be found at:
I have seen someone else ask about that in the forum, and I will answer the same way I replied there. Change Store on Lulu to England, click Create, Printed, and you will see the Pocket book option and with ISBN option. My first books created at Lulu were Pocketbooks. Try that. I don't think the site actually knows which country you are in.
I have no idea why the option is greyed out when you look for it further down the page when set on USA.
(Hrrm, one can only add URLs of images in here, not upload them.)