[marp68]

Is there any way to update the shelves data for books on the device?

Suddenly the categories in the menu Shelves on the reader don't have any books. Says 0 books in all categories except one.

All books are there, but only visible in the menus Books or Author.

I think it has to do with the fact that I logged out and were forced to do the registration process again. Don't remember if I had to add all books again or if they showed up after that. They were not bought from Kobo, but sideloaded through Calibre.

I have only added one book after that, and that is the book which is visible in it's catagory/shelf.

Do I have to delete all books from the reader and add everyone again? If so, is it better to do a complete reset or how can I be sure that I have deleted all metadata etc about the books, so I can add them again without anything going wrong?

Or is it a way to update the device from Calibre so that also the shelf field is updated?