Hello! Just a quick note. I was able to get Spotty working with my Pi Zero W and HiFiBerry DAC+ without any problem.
Since I want to use this setup as in a room of a multi-room setup, I don’t need Spotify Connect as per your comments.
I’ll proceed with the setup for the rooms using Spotty and Logitech Media Server. I’m still not sure what the issue is with Pi Zero W and Spotify Connect, but it does not appear to be needed for my configuration.
Thank you for your help. Best regards.