Dowloaded music can't be found or redownloaded
I signed into iTunes, went to my Library, Purchases, and began to download music to my Windows 10 desktop Music - iTunes Media folder. Most music did fine, but others went through the download process but can't be found in the iTunes Media folder (or anywhere for that matter!). When I went back to the music to try again, the download button is not visible.
Windows, Windows 10