So, I've been trying to connect the Best Buy wifi and Nintendo Zones to download the recent Animal Crossing content, but I keep getting this error. It's an error based on incorrect Wifi set up, but it shouldn't matter because I'm at Best Buy and Nintendo Zones. I have recieved this error at multiple Best Buy and Nintendo Zone locations. On top of everything, my sister can connect perfectly on her own 3DS, which suggests that it's not an error with the location's wifi. I do not have parental controls enabled and have opted in for Spotpass content for all software I own.
I have only experienced this problem so far with Animal Crossing and the Nintendo Zone app, I will try to connect with Mario Kart 7 the next time I visit a Nintendo Zone location. This problem started up in mid July, prior to this I was able to connect to Best Buy wifi and Nintendo Zones perfectly to download the Animal Crossing content or access the Nintendo Zone app.
Both my and my sister's 3DS are on firmware ver.6.2.0-12U