Sorry, but some users were abusing this to cause issues with the chat system, so it's been disabled permanently.
OP is known to have abused some of the features of ICO Online, and he's almost certain to be amongst those who abused the chat system in the manner you describe.
As another example, he crashes games hosted in lobby if he does not, as he so often puts it, 'get his way' with the host instead of just leaving or hosting his own game. Crashing games is a recognized offence that administrators for many multiplayer online games do not tolerate. To top it off, Starplayer uses foul, abusive language to all and sundry that come to play online; he doesn't have any regard for anyone and he'll use language as he pleases.
Starplayer doesn't deserve to play online with such irresponsible behaviour. I'm sure many people would agree with me. The next time I see him do any of this I'll be happy to send visual proof.