[jackx3rx]

pawn Код:

public OnPlayerText(playerid, text[])
{
    new string[128], playername[MAX_PLAYER_NAME];
    GetPlayerName(playerid,playername,sizeof(playername));
    format(string, sizeof(string), "%s(%u): %s", playername, playerid, text);
    SendClientMessageToAll(-1, string);
    return 1;
}

Try this, I replaced the %i with %u which is playerid, it SHOULD work. My bad before.