We've created this Forum Thread with some workarounds and advice to assist you in publishing you ebook.
Book not showing up on Lulu
Hi, I published a book which keeps disappearing from Lulu searches. It is literally there one minute, and not the next. I know it's "really" there, because I can access it via my account, and reach it via the same URL when not logged in. But it (usually) doesn't show up when I type in the title and/or my name.