Cubase 10.5 Elements trial won't run


I have a lot of troubles installing Cubase 10.5 Elements trial. When I start to run a program, nothing happens, the program is just visible in the task manager. When I run eLicenser Control Center to activate my trial, also nothing happens, after half hour of waiting I get an error message saying “could not connect to POS”. I deleted all files in %temp%, reinstalled both eLicenser and Cubase, still the same result. In the attachments you can see the dimmed out eLicenser, error message and task manager window.

Please help! Thank you!