Nintendo ID problems?

Just got a Wii U (Mario kart 8 bundle) and the wii u is not allowing me to log in with my club nintendo info. I sign in just fine to the website, but I keep being told by the wii I that I'm using the incorrect information, even though I know I'm not. Anyone else having these issues?

Your Nintendo Network ID is not the same as your Club Nintendo Account and may have a different password. I recently changed mine so that they match.

Edit - instructions on resetting your Nintendo Network ID password: Forgot Nintendo Network Password

and How to register a Nintendo Network ID on Wii U if you don't have one yet.

Club Nintendo's been acting screwy since the Mario Kart 8 launch; probably due to overwhelming traffic. Give it a day or so.