Copyright infringement question

[radiocblue]

Podcaster here from the Anchor days and beyond. RSS feed was taken down a few days ago, citing possible infringement of a third party. 
The URL and Feed URL they provided do not link anywhere. 
When I cited my reasons for the content of my show, I received this response: 

"We want to ensure that creators are using the appropriate channels to share their content with our users. Spotify for Podcasters should not be used to distribute music tracks, DJ mixes, or similar musical content. Spotify reserves the right to remove podcasts that violate this policy, regardless of the licensing status of your music.

If you’re a creator looking to get your music on Spotify, you can check out our 'How do I get music on Spotify?' FAQ on Spotify for Artists. You can also use one of our preferred providers to distribute your music."

I am not a creator with my own music. I host a show that uses music that I choose to have sent to me from artists, artists managers and public relations professionals specializing in music.  All have expressed permission for me to use for podcasts. I am careful to insert music that I have or have ever been given the OK to use in a podcast. If I have ever caused an infraction, I should have the right to know who blew the whistle, what the infraction actually is  (I don't know who or what at this time) and how to get my RSS feed restored. 
So, what to do?