Tishie Miklos

I have noticed for about the past month things have been a little wonky in my store on Marketplace. When I choose to show just items that are unlisted, it shows me a list of all most 400 items, which I have listed repeatedly. Some of them even show as listed. I have several items that I have setup and added photos and listed and when I go back and look it is a blank entry for that item. Where is the stuff I'm imputing going? This is very frustrating. I have over 800 items showing in my marketplace list. But showing for sale is only about half of them. Even some that are marked and showing up as listed. Am I doing something wrong? Can anybody give me an idea why this might be happening?