All versions of S1 are the full version, the product code is what unlocks the different versions. If you have already registered the product all you have to do is open S1, and at the top left of the page click on Studio One, in the dropdown click Studio One Activation. A window will open for the product key, simply click the little down arrow then show my existing Product Key, there you will see your Artist activation, click it then activate. See attached photo.