Quick answer: Because eShop codes are delivered instantly and can be redeemed right away, digital gift cards generally can’t be returned or refunded once delivered. If a code has a genuine problem, contact us and we’ll make it right.
It's a fair question to ask before you buy. The short version: a digital eShop code works like cash, so once it's delivered it generally can't be returned or exchanged — but a genuine problem with a code is a different story, and that's where we step in.
The moment a code is delivered, it could be redeemed. That's why digital gift cards are treated as final sale across the board — by Nintendo and by retailers alike. We don't offer returns or exchanges on delivered codes for the same reason; there's no way to "un-send" a code that may already be in use.
Final sale isn't the same as "you're on your own." If a code genuinely doesn't work — and hasn't already been redeemed — that's a problem we want to fix. Before reaching out, it's worth running through card not working and confirming it isn't a region mismatch. Then contact us with your order number and we'll investigate.
Good news: eShop funds never expire. So if you grabbed more credit than you needed, it simply waits on your account for your next game, DLC, or Switch Online membership — nothing is lost.