Hey all,
I just called Nintendo of Europe as I'm also banned on my o3DS (EUR) with sysNAND 9.2 emuNAND 10.3. I have to admit that I used the unlock code very excessively, but I'm not really angry as I knew a ban would come sooner or later.
I told them that I had a question regarding Nintendo Badge Arcade as I am receiving this error code since today. They asked me a number of questions to verify my identity, and then the man I was talking to had to have a short consultation with a colleague.
After that he told me that it was in fact a ban and that my NNID was blocked for this game. I was asked if I could imagine a reason for this and if I purposely violated their terms of service, but I responded that I would use my 3DS with my siblings and that I really could not explain why
I was then offered some more details that I will receive via email shortly (hopefully today). Unfortunately I forgot to ask how long this ban lasts!
This is why I called again but the woman there said I would get another email from the man today or tomorrow and I could then ask my question as a reply. Well I will now just wait for the first email to arrive, if it does so within ~40 minutes and the man's name is in it I can call again and ask after him