You entered the code incorrectly.
Copy paste the Netflix code that we delivered to exclude typo's and try to redeem it again.
Go to https://www.netflix.com/redeem and login with your Netflix account. Try to redeem the code again.
You or someone else already used this code.
Try to re-login with your , if the subscription or the Netflix credits are not activated in your account - contact Netflix support.
Check your Billing Details page (https://netflix.com/billingactivity) to see if the gift card balance is already reflected.
Cookies of your current web browser might cause this problem.
Clear the Netflix cookie from your web browser.
The gift card’s currency does not match the currency you are billed in.
The currency of the gift card must match your billing currency to be successfully redeemed.
You can not change the region settings of your Netflix account manually.
Wenn nach den oben genannten Schritten weiterhin Probleme auftreten? Dann kontaktiere bitte den Support.