Clikpic have a weird system, they have so many content sections and if you don't use the right one (even if it looks like and is labelled as the right one) it doesn't work.
I'm not trying to make you sound silly either by the way, i had exactly the same problem a couple of years ago when i was doing updates to my pages and they weren't showing, and after about a dozen emails backwards and forwards they worked out that i was doing the update on the wrong page, even though it was the page that i was trying to update, i should have been doing it as a content section apparently, which is then applied to the page in question.
All became way too complicated yet still nowhere near as advanced as their competitors in the end so i'm now a zenny user.
Still not perfect but a whole lot better.