text not being shown on book page

Hi Geriandmatt

In your CSS you have the following rule:

.clear, .cleaner {
    clear: both;
    height: 0;
    overflow: hidden;
}

You need to remove the height: 0; from that rule to enable the book content to show.

Alternatively, if you can’t add CSS to your theme, you could always add something like this from a custom CSS plugin

.single-tb_book .entry-content.clear{
    height:auto;
    overflow:visible;
}