Recently Amazon Music stopped allowing me to play my own uploaded music from many years ago in playlists. It says to access my songs via playlists I have to su

Recently Amazon Music stopped allowing me to play my own uploaded music from many years ago in playlists. It says to access my songs via playlists I have to subscribe to Amazon Unlimited Music. It is my music, why can't I play it via playlist anymore? I can still play albums I uploaded, just not playlists.