Hi,

Thanks for the details. We checked your site and found the cause.

On screens narrower than 960px the theme switches to its “safe mode” layout. In that mode the script that switches between the book’s pages also runs on regular WordPress pages such as /epk/, and it hides the page content there. That’s why you see the header and the background but no content. The front page is the book itself, so it isn’t affected.

This is a theme bug, not something wrong with your site. We will release a theme update that fixes it within a week. Once it’s out, update the theme and the page content will show on mobile again.

Best regards,
Mehmet
Pixelwars Support