Coming from someone with a lot of experience buying from the Argentinian eShop, some cards simply do not work.
I’ve also found that after a few consecutive purchases on the same day, most working cards will start to be rejected and you will have to wait until Nintendo’s system ‘resets’ and allows you to use the card again. I do not know how long this period is, but I had no issues using my card again after a week or so.
To the people buying Moving Out just because it’s cheap. I bought it on release and had serious buyer’s remorse. The controls feel sluggish and unresponsive, and paired with the poor physics engine, the game is way more frustrating than it needs to be. I played about 10 levels and never picked it up again. Would not recommend this game to anyone.