That is because in newer classifieds versions your actually taken to the forum profile where you have a classifieds tab that shows you classifieds info. I assume we are talking vb4 here. I know I have asked for your site link in other posts. Hard for me to properly answer you when I do not know specifically the circumstances.
I read your other post and it sayd vb3 so thats a different animal
In your forums subdirectory of the gallery the vb3.php file line 472 this line
Code:
Content visible to verified customers only.
change it to this
Code:
Content visible to verified customers only.