Orphaned friends on Friends tab in iPad app (0.7.2)

[SDMR]

I'm confused by how the old system of Spotify "friends" has been replaced by "followers/following" and now have an orphaned friend.

Several years ago I became "friends" with a particular user.  He still shows up in the Friends tab in the Spotify iPad app (0.7.2).  However I do not subscribe to any of his playlists nor am I following him.  I do not know his username and am therefore unable to find him in order to "follow" him in Spotify Windows application (0.9.1).  I also cannot delete him as a Spotify "friend" as there appears to be no way to do this in the iPad app.  (NB - I have never linked my Spotify and Facebook accounts.)

Four questions:

(1) What has happened to old-style Spotify "friends" in the transition to "followers/following"?  (Are linkages still active?  Do they have permissions to see any of my content or playlists?)

(2) How can I convert my old-style Spotify "friends" into people that I "follow" on Spotify"?  (NB - I don't know the Spotify username and have not linked my account using Facebook.)

(3) How can I delete old-style Spotify "friends"?

(4) When will "followers/following" become available on the iPad app?

Thanks in advance!

Simon