Hello, how are you?
I understand that you would like to upgrade to Windows 10 Pro and use your new digital license for activation.
In that case, I suggest you first try to upgrade to Windows 10 Pro using generic Windows upgrade key.
After that, Windows should identify the linked license in your email and automatically activate.
- Press Windows+I to access Windows settings, then access Update and security -> Activation;
- Click on Change Product Key, if it requests UAC permissions click on Yes;
- Enter the key below and click the Start Upgrade button:
VK7JG-NPHTM-C97JM-9MPGT-3V66T
- Wait for the Windows 10 Pro upgrade process to finish, the system will probably restart a few times.
After finishing the update, access the settings again and check the activation.