Oh no, I didn't know about this. It looks like Spotify hasn't authorized anybody but me and I would have to add every user I want to add individually. I don't think that anybody has been able to use this app. If anybody really wants to try it out you can DM me on X https://twitter.com/thelukew3 or follow me there and I'll post an update when it's fixed. Maybe I'll relaunch next year. Thanks for the help.