Visit https://help.netflix.com/en/legal/termsofuse and https://help.netflix.com/en/node/32950/gb for the terms and conditions.
You can apply a gift card to your account if you pay through a third party, except if you pay through Apple or if you have a Netflix-included package.
If you pay through Apple and want to use a Netflix gift card, you will need to cancel your Netflix account, wait until it closes, then restart it with your gift card.
If you have a Netflix-included package, you can save the gift card and use it when your account is no longer linked to a package, or you can apply it to a different Netflix account.
