I have a book I put on my bookshelf, with the correct ISBN, but it shows up as HB. The book isn't HB, it's PB. What should I do?

Unfortunately, hte same ISBN can be re-used for hardback and paperback editions.

Because the cover type has to match the PBS information, all you can do is post your book without an ISBN, and tag it 'same as ISBN XXXXX.'

If it's a wishlisted book, you'd probably get some action posting about it in the Book Bazaar.

Still, it's not the end of the world. I've had plenty of non-ISBN'd books on my shelf get picked.