A: No. Licenses are version-specific. A Cubase 12 code activates Cubase 12. You cannot downgrade with a newer code.
After what felt like an eternity, Alex finally got through to a support representative. The representative asked him for his serial number and proof of purchase, which Alex was able to provide. However, the representative informed him that the code he had was likely a "retail" code, which could only be activated through the Steinberg website. activation code for cubase 11