AutoMix not working on iTunes purchases in Apple Music

Automix is not working. I read that if you want it to work on your own files, they have to match those in Apple's music database, but I cannot even get AutoMix working on my iTunes purchases, that Apple surely must have.. Any thoughts welcome... though a fix would be even better. :-)

[Re-Titled by Moderator]

Original Title: Automix not Automixing.