Controversial issues and their resolutions.

I don't know where to post this, as I'm not very familiar with the forum. When playing online against any opponent, when my hero attacks any of the opponent's heroes, the opponent doesn't see that I'm attacking them (i.e., I'm in battle, but the opponent isn't). I've already tried almost everything. If anyone knows how to fix this, please help me! My ICQ is 350941084.