In order to activate your product on the Nintendo website, please follow these steps:
Activation through the website:
- Log into your Nintendo account or create if you do not have one.
- Go here for access to the Nintendo redemption page.
- Paste the key into the designated area.
- Press the “Next button”.
Activation through the console:
- Select Nintendo eShop on the HOME menu to launch it.
- Log into your Nintendo account on which you would like to redeem the code.
- Select “Redeem Code” on the left side of the screen.
- Enter the key to finish the activation process.
Here you can check how to activate the Nintendo Switch Key: