Ive had the same problem. If you post a post over a certain size it wont work. Basically a 1 page word document is your limit. I have been unable to post my complete haves want list but was able to post a one set h/w list and it works. The minute you edit the post adding too much info it goes blank. Im thinking there must be a size limit on the posts for this web site.
Have sent a private message but just in case anyone else is trying, Ive loaded my list from word and Notepad which both work as long as your list is no longer than a page and a bit on word. Once you go over this limit the whole document will disappear Even adding half a page at a time , once you go over limit the list will disappear