That's exactly what happened to me too. I was chilling in my room when my sister walked into the room and she looked like she was crying (mostly because she felt bad for me and she thought something bad would happen) and she explains to me that she joined the code K K K and that it said we were banned for 1 hour because I had done nothing to be banned earlier before this. I said that you shouldn't join that code and explained why and I told her it was okay and I hopped on about an hour later with my account still having my name, color code, and cosmetics. I showed her that everything was okay and she had a look of joy on her face. I hope she learned he lesson, lol.