I understand that you are receiving an error when trying to complete the Earn Free NX offers. The NX Credit offered through the "Earn Free NX" programs are administered and operated by Nexon's marketing partners. Nexon is not responsible for the operation of these offers. Players who need customer support will need to contact the company making the offer.
For more information on this, please visit the following link: Nexon Passport Login
We apologize for any inconvenience this may have caused you.
Nexon America Inc.