@MojangSupport Hi. I just purchased a license but no email was requested. I already paid but I don't know where to download and login.

If you have trouble launching the game post-migration, remember to use the Microsoft login option & check out this FAQ: msft.it/6010XOWf8!

I did not create a Mojang account when I bought the game. The webpage just allowed me to pay without entering any email. I already had a Windows copy and when I entered in the launcher, only this copy is available. Java edition appears just the demo version.