Sigh, would everyone stop flaming him, it's very tiring -_- i don't agree with hacking either, but it's his choice really, so let him get on with it.
Yonny it's because you have an arceus on your team, and a hacked darkrai as well.
Hacked darkrai can't get past the wifi filter, only the legit cherish ball ones that nintendo gave out, so if you take those out you should be able to get on fine.
And fyi to everyone here, i just tried to get on wifi with some hacked mon i got off gts and i got on fine, but as soon as i put my traded arceus in my card and tried i got nowhere, so it shouldn't be the hacking side but the arceus and non-legit darkrai thats the issue.
T_S: Sorry i can't help you though, as far as i can see you shouldn't have a problem.