Login to your client area (https://wannaflix.com/clientarea.php)
Click on your active SmartDNS subscription
Select your prefered Netflix region and click "Update"
Log in to the router. Common user names are: admin, root, default and common passwords are admin,1234, default, password
Find network settings and change DNS to 220.127.116.11 and 18.104.22.168
Apply the changes by saving settings.
Restart devices connected to the router.