Hello,
Thank you for posting in the Microsoft community forum.
In a Remote Desktop environment, after the license server is successfully activated and the RDS CAL is installed, the Remote Desktop Licensing Manager starts tracking and assigning CAL to users or devices connected to the remote desktop session host(RDSH) as expected.
It is recommended that you check the status of the license server and RDS CAL by referring to the following guidance articles to ensure proper license allocation and use.
Install RDS client access licenses | Microsoft Learn
Installing Remote Desktop Services Client Access Licenses | Microsoft Learn
I hope this helps.
Best regards
Jacen