MOO Greeting Cards currently only support a single, fixed orientation through the entire pack of cards. If you want to reorder an old pack, with mixed orientation, this is possible, but only if you’re not making any changes to the content or design. Simply select “Reorder” in your account and the cards will be added to your cart, exactly as previously ordered.
If you want to reorder, with changes, via the “Edit & Reorder” function in your account, the layout will be automatically changed to fixed orientation through the pack. You’ll be prompted (as below) to check your designs carefully, and remove any designs which don’t suit the new, fixed landscape or portrait orientation.