I am going to disable the "partial match" feature to see if this fixes the issue of PMs going to the wrong person. This means that /pm c0w Hi! will not work, it has to be /pm c0wg0d Hi!
What about with other players? When I try to pm them, it don't work. Will partial matching you only work?
That was just an example. You will have to type the full name of everyone, not just c0wg0d in order for the private message to go through. Since c0w has not fixed it yet, neither partial nor full completion of someone's name will work as of now. I'm sure c0w will try to update us when it's been fixed though