Mod Loyce after talking to kiran banned me, especialista, and my brothers tjorge and hikigaeru and ignored our RollPoints in the august event we participated. Even though I understand why they could think we're one person, we used to tip eachother all the time without saying anything in chat (since we can talk to eachother without rollin know), and even used the same IP once or twice, even though that dont happen nowdays, since we don't even live together anymore.
Afaik using the same IP on different accounts is not allowed because it can be a sign of abusing their games and it is written on their
terms that if they think that you guys are abusing they have the rights to ban your accounts. You and your brothers should've use a vpn to avoid using the same IP.
It is strange they do not allow you to participate in the bctalk forums contests if they are not thinking you are using multiple accounts on their site.
It's not strange, it's their contest so they have their own rules.