My license is already activated for KOMPAS-3D and libraries, I can see the key and its licenses in Admin Control Center (http://localhost:1947/_int_/devices.html), but KOMPAS-3D starts in demo-mode still.
Solution:
Please check the activation of KOMPAS-3D license in menu Settings:
To get this license automaticaly when starting KOMPAS-3D, please, set this options in menu Settings->Parameters... at tab System\General\System Control: