ISSUE UPDATE:
1. Deactiveted all suspicious plugins as indicated : negative. So I reactiveted one at the time. No difference.
2. Instead of going to WP – all articles – edit article – connect to forum (as I was usually doing with negative results) I went publishing a fresh article with fresh imported images and that did the magic.
3. Funny thing is that when I go in the forum and edit (in the forum edit post window) one of the old messages that didnt show images (those published updating existing WP articles), the original images are all there ! But when I then save the edited message (always in the forum edit post window) the images dont show up again.
4. Another test: from the WP “edit article” window, if I copy everything (text and images) then I past it as it is in the forum inside the edit post window of the same connected one, in this way it works and shows all images again.
ALL THIS IS HAPPENING ONLY IF LOGGED IN AS ADMIN.
If not, articles to user randomly show but most of the times don’t.
http://cuffiehifi.info/forum/cuffie-1/test-1
updating existing WP articles and connecting to forum: http://cuffiehifi.info/forum/cuffie-1/cuffie-akg-akg-k701
Hope this helps