Most of these partner products require you to make an account first. Click this button in your Vouchers tab:
And then follow the instructions for each plugin. You don’t have to download and install the plugins yet, just make sure that the vouchers are registered to your accounts by October 3rd.
If you don’t see any partner product vouchers in your MySteinberg account, please make sure that your Cubase 12 download access code is activated and verified.