I'm evaluating this app — it seems to have everything I need — but I'm facing an issue, and I’m not sure if it’s a limitation of the app, EPUB3, or something else.

I'm creating an EPUB3 ebook (A4 size) from a fully illustrated children's book. On mobile, it looks fine, but on iPad in landscape mode, the Book app shows two pages — and the left one is just white.

How can I configure it to display the first two actual pages?

The reason I need this: in the printed version, the front and back covers form a single spread image. I want to preserve that. In this case, the back cover works well as the first page.

Please reply briefly — my trial period is almost over.