Classifieds Page Not Listing any Adverts

Good Morning.
May I apologise in advance if I am missing something very obvious, but I have experimented for hours, trawled the support pages and slept on the problem and I still cannot solve it.

I have Classifieds Plugin installed (on theme Twenty Twelve, on my Mamp-powered local host)

All seems to be working except that none of the 3 classifieds I have created show up on the Classifieds page. They are all there on My Classifieds, but the classified page simply reads: Classifieds

"Virtual page. Editing this page won’t change anything." I attach a screenshot.

I want to carry on experimenting with this today, as I have free day so would really appreciate a quick response.

Many thanks

Andy