If you make a RDS install for a simple server. I found today a small tip to simply add the Remote Desktop Session Host’s role and set the licensing mode correctly; (As the console don’t seem to be there by default)
Open gpedits.msc, and go there:
Computer Configuration\ Administrative Templates\ Windows Components\ Remote Desktop Services\ Remote Desktop Session Host\ Licensing
And set those two options;
Use the specified Remote Desktop license servers Enabled, and enter the licensing server.
Set the Remote Desktop licensing mode Enabled, and select user or device.
After you can hit a refresh in your RD Licencing Diagnostic MMC, and the status should be good !