I had the same problem at first - it's that you actually have to give each account a different name in the initial window, and then change it in the File-Server Settings window to "justbreathe80". I called my separate ones "lj", "ij" and "dw" on the intro screen, then changed them to "lamardeuse" when I went into Server Settings (you may have to uninstall and reinstall the program - I did and it worked fine).