In principle, within our production process, it's not possible for a card to not be printed or to go missing randomly. What often happens is that the missing card may be 'stuck' to the card before or after it. The IXXI is printed on synthetic material, which can sometimes become static, causing cards to stick together. You might not notice this immediately because the material is so light and thin. The easiest solution is to check the numbering of the cards.
With every IXXI order, there is always one extra white card; this is not the missing card.
If your order is still incomplete, please send an email to mail@ixxi.com with your order number and a brief description.