Nexon's free nx surveys.

So on an alternate account, I've been trying to stock up on free nx, but whenever I follow the requirments for each survey that I do, I never get rewarded.

Why is this, I put in valid info, and I do what is required, but the status on the offers is always "veiwed" and pending and it stays like that until the offer expires.

I even send reports of finishing the offers, but I still get nothing from them either.

Am I doing something wrong?