As I said when you posted before, you have a fixed-format book (that's what you get when you use the Kids' Book Creator), which never produces a Look Inside.
The only work-around, as I also said before, is to have a print version from which the Look Inside can be taken, and it often takes a while for that to kick in. This book has no indication of a print version.
Kita, the platform you used to create your book does not produce a Look Inside, and there is no way to get one using children's book creator. It seems like you have been told this before from many of the residents experts in this forum. Perhaps you could use the Contact Us link at the bottom of the page and leave a suggestion for adding Look Inside to this type of product.