Upgrade from Cross DJ(app) to Cross

Good evening all,
I'm looking to upgrade from Cross DJ to Cross, however is it right that i'll need my license key to do so? I purchased Cross DJ for my Macbook pro through the app store and cannot find a licence key. I just hit install and everything happened from there. I'm just worried that i'll pay the upgrade fee and fail at the 1st hurdle.
May be a question for Mixvibes admin, but if anyone knows then please share the knoweledge.
Many thanks.
I'm looking to upgrade from Cross DJ to Cross, however is it right that i'll need my license key to do so? I purchased Cross DJ for my Macbook pro through the app store and cannot find a licence key. I just hit install and everything happened from there. I'm just worried that i'll pay the upgrade fee and fail at the 1st hurdle.
May be a question for Mixvibes admin, but if anyone knows then please share the knoweledge.
Many thanks.