You perhaps have opened the e-shop with the CIA installed?
I actually did. I followed the link to update within the smash bros cia and after updating through that I saw that I couldn't go online on smash or see my friends list.
Edit: Before that I did patch the CIA with a patch to get the DLC for free. I updated through the eshop right after that. Could that have gotten me banned?
Last edited by Bubbysaur,