If you unlink your Nintendo account, you will lose access to all of the data associated with it. This includes any games or content that you have purchased, as well as any friends that you have added. In order to regain access to this data, you would need to create a new Nintendo account and link it with your Switch console.

To unlink a Nintendo Account from a switch profile, log into your account on the Nintendo Switch console, go to “Users and then select the profile you want to unlink. Select “Unlink” and confirm.

No.
De-registering a switch does not delete the content.

A linked account is a Nintendo account that has been set up with the Nintendo Switch console.

To change the primary account on a Switch, you will need to follow these steps:
Press and hold the power button for 10 seconds. The system will turn off and then back on again.
When the Nintendo logo appears on the screen, release the power button.
Select “Change User” from the menu that appears on-screen.
4.

Yes, you can change the email on your Nintendo Switch. To do so, you’ll need to log into the Nintendo Account Management System and update your email address there.

Yes, you can transfer your Nintendo Switch funds to another account. To do so, first log into your account on the Nintendo website. Once there, click on “My Account” in the upper right-hand corner of the screen. Next, select “Nintendo eShop.” You will be taken to a page where you can see all of your past and present purchases. Click on the “Order History” tab and select “Transfer Funds.

No, you can use one Nintendo account to sign in on multiple consoles. You can also create a child account if you want to control what your children are playing.
You can use one Nintendo account to sign in on multiple consoles. You can also create a child account if you want to control what your children are playing.

No, each switch user does not need an online account.

If you deregister your Nintendo Switch, there is no way to recover it. You’ll need to buy a new one and set it up again.