Hello,
could you, please be more specific what doesn't work? The format you've written works for me (NPM 10.5) and adding accountid and password into query string for login.aspx gets me into default summary page. Direct links into other pages like group summary would look like: https://servername/Orion/SummaryView.aspx?ViewName=Groups+Summary&accountid=user1&password=123 which means adding &accountid=username&password=pwd after the link. Could you, please check it and in case it doesn't work for some reason, please create support ticket for deeper investigation.