dJay Pro use on two devices

I bought dJay pro for my Windows desktop at home through my Microsoft account, but I will be traveling soon so I want to use it on my Mac laptop. It is asking me for a license key, although since I bought it through the Microsoft store, it did not provide me with one.

Is there any way for someone to provide me with my license key so I can use it seamlessly on my laptop and desktop? I would not like to have to buy the program twice…