I'm trying to enable my iCloud Music library, but my locally stored songs (i,e. not the ones I added on Apple Music) aren't sync'ing over to my phone and iPad. I'm running macOS 12.5, iTunes 18.104.22.168, and iOS 10.3.2. I tried logging off and signing into my iTunes account on all devices, as well as toggling the iCloud Music Library options on and off. Neither helped.