Cargo Packaging Hack 1.1 + Redeem Codes

The game itself is fine in theory. I’m on level 3, and can’t get past it. I have 1 more item to unlock, along with saving the needed amount of money to move to the next level. However, the item I need to unlock is not showing up. It’s the clerk person sitting at a desk, where you go to make your upgrades. The dotted outline is there. The blue arrow pointing down to the empty square is there. But that’s it. There is no way to pay for that person or get them. Without that, you cannot proceed to level 4. Do better and earn more stars for a better rating. Please and thank you!