Missing Annihilator Albums

[Amcar]

Since I've been into Annihilator, about a year or so ago, I've never been able to listen to any of their albums from 1994-2001 (King of the Kill, Refresh the Demon, Remains, Criteria for a Black Widow, Carnival Diablos) on Spotify. I can listen to them on Apple Music, however. So I figured maybe it was a region thing, as I live in the US and the band is from Canada? I had a Canadian friend of mine check for me, and he could see everything I could, plus King of the Kill, but nothing else. I checked this post and while the poster says it was resolved, it clearly isn't as the post was made in 2018. Can anyone help me out? Anything helps.