Adobe Acrobat Pro 2020 on RDS (terminal server)

Hi, I have installed Adobe Acrobat Pro 2020 on a RDS server (Windows Server 2019 Standard). The issue I am seeing as the administrator is that when a user logs into the RDS using his domain credentials, launched Adobe Acrobat Pro 2020, he is prompted to login either via 'serial number' or 'adobe id'. I selected serial number (which was assigned to his Adobe Account) and entered serial number which then opened Adobe Acrobat Pro 2020. In the top right hand corner I can see it is showing the users Adobe Account. The issue is, in the bottom left hand corner, it shows as a '7-day trial'. I have tried signing out and signing back in multiple times but it still shows as a 7-day trial. If I log into the RDS server using my domain admin account and launch Adobe Acrobat Pro 2020 and go through siging in with the serial number that was assigned to the User, Adobe shows his Adobe Account ID in the top right hand corner and Adobe Acrobat Pro 2020 is fully licensed (no 7-day trial). This to me sound like a permissions issue. Of course we don't want to give standard users Local Admin rights, so what can I do. I also tried launching Adobe Acrotbat Pro 2020 as 'administrator' when signed in to the RDS server as the User (right click on Adobe Acrobat Pro 2020 desktop icon and select run as administrator), the application then launches fully licensed (no 7-day trial). I have alreayd tried giving full permission to the Adobe folders in all the folder paths (program files, program files 86, program data, users/local, users/roaming with full control) but same issue 7-day trial. Only works if I right click the Adobe Acrobat Pro 2020 desktop icon and run-as-administrator. Any help would be really appreciated?