Offline Playlists - Issue or User Error?

Using Substreamer on Android 16 (samsung Galaxy S21FE), trying to download playlists for offline use. Unsure if this is a bug or just user error - help appreciated.

I've tried:

• Hitting the little arrow next to the heading of the playlist
• Going into the 3 dot menu and selecting download playlist
• Downloading an individual song

Downloading the song individually works, but the downloading the playlists do not. Nothing shows up in the download queue in settings.

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