Hello! For the first time, everything went without problems. Installed the licensor, activated the key. He got attached and displayed in soft lic menu. After reinstalling the system. Everything started and started working. I tied a new soft lic in my personal account. But my software is empty. And under the self site steinberg you can see the license and the linked computer. How to link the license to soft licenser? How it works? 
Hi and welcome to the forum,
Cubase 12 (and 13) is not using eLicenser anymore. Install the Steinberg Activation Manager, where is the license sitting.
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Thank you 