The Target Column does not show any columns for me to choose.
What's the list that you connected? Could you try again by delete your current List Filter Webpart and add another once to your page. Make connect again and open the toolpart to config. The target colum will show when you choose "Select Connected List". Please tell me if your Target Column still not show any columns, if possible, plese send me some image then I can help you to use it. Thanks