unable to download ITunes Plus versions of purchased music

I recently subscribed to iTunes Match in order to get iWTunes Plus versions of .m4p songs that will not play over Sonos. All the songs now show an iCloud status of Purchased or Matched, but if I follow the steps to download the iTunes Plus versions -- go to My Music, delete the songs. go to the Purchased list, then download -- alll that happens is the song disappears from both My Music and the Purchased list. There is no iCould download icon on any songs. If I click on the album name I get a message saying "the item you've requested is not currently available in the US store." The albums in question are in fact available.

I am using iTUnes 12.3.1.23, OSX 10.9.5

Any suggestions would be most appreciated.

Thanks