Reader on RDS asking for login

Hi all,

I have 3 Microsoft RDS servers and currently have the free Adobe Reader installed on them and we have 2 members of staff that we need to access the PRO version so i spoke to Adobe Sales this morning who said i can simply keep the free reader installed and then create 2 user accounts with PRO licences, then when these 2 users need to do something in the PRO version they can simply log into the FREE version with their logins (and PRO licences assigned) and it would activate the PRO components just for those users. I have given one of the users the login details and when they have logged in they then were told "something" would be downloaded and it has now downloaded and installed the Adobe Genuine checker tool but this is now prompting EVERYONE to login and so no-one can use the FREE version ? Could someone advise ? Thanks