Well, I try to redo the register for NSMBU, NG3 and Nintendo Land, but it's still saying my games have already been registered!!!
I will send Nintendo an e-mail, and I hope they can help me out.
Btw, I registered Kirby's Dream Collection yesterday, and it said it wasn't eligible for coins, but I login just now and there was a survey for 40 coins waiting for me. So now I'm at Platinum + 20 coins.
Still I want the limited time 70 coins, because 10 extra coins times 3 games means I get the additional 30 coins.