First, please install and start OkayFreedom.
Afterwards, a small eye icon will appear in your systray in the lower right of your screen.
If it does not appear, please click on the little arrow sign to show hidden icons.
Please click on that icon to open the OkayFreedom menu. In the menu select "Manage license". The following page will open in your default browser:
Click on "Enter serial". Now this screen will open:
Now please enter your Premium Code and click on "Redeem". Afterwards your license will be active and you can use OkayFreedom without any limits. It might be necessary to quit and restart your OkayFreedom once before the license is recognized.