Deezer updates its API regularly. Deemix must be up-to-date. Check the official Deemix GitHub releases for new versions.
: Investigating the community-driven "Premium ARL" lists found on platforms like Scribd or Telegram, where users share valid premium tokens to allow others to bypass subscription fees. Deemix Arl Premium
Since Deemix is a tool that essentially bridges the gap between streaming and local ownership, a "paper" looking into it would best serve as a technical and ethical analysis. Deezer updates its API regularly