The last listing by you that shows up was posted on Mar 31.
I have found that sometimes when you click on the "Post" button things don't work as you think they should ... cannot offer a reason.
You just have to wait, hope for the best, and repeat if necessary. . You will know if it posts properly, but sometimes it just takes its own sweet time.
I should have qualified what I said ... I think my internet connect or computer are particularly slow at some times ... did not mean to cast any aspersions on the IAP forum software, although I realize that it may have sounded that way ... there could be several explanations of the phenomenon in question.