Regarding the codes that don't work

[Vicks]

I'm sure they are very well aware of the problem with the last code. They are most likely working on it. These things take time and no amount of our asking/complaining/commenting about it is going to get it dealt with any faster.

According to RedboXen's post, there isn't even a code anywhere near the last code. So most likely there was miscommunication, or an error along the way between the game developers and the people responsible for the codes airing on the shows. Just looking at that code, it doesn't make sense or fit in with the theme of the other codes/furniture items. So I'm not surprised it's not even in the coding of the game.

Since it's not the code itself that is the error, they will most likely show the correct code in an upcoming episode, or show it on the CN/game website. If it were an error with the code itself not working, then they would fix it and it would eventually work. That's not the case. So keep your eyes open for the correct code and any others.
~Vicks