Cannot connect to server

[Laenaya]

First, (if you haven't done this yet) right click heRO.exe then click in "Properties" and set it to run in compatibility mode. The window should look similar to this one, from my installation guide:

Another thing you can try is moving your heRO folder out of the default folder ("Program Files"), if it's in there of course, to make sure it'll have certain privileges to run the game properly.