The 'author' tag should contain your name or the name of the organization which has made the podcast.
The ''itunes:explicit' tags should contain 'true' or 'false', not 'yes' or 'no'.
You have included HTML in your 'itunes:summary' tags - this is not a fatal error but it's inadvisable as it won't be rendered
This page show you the errors in detail:
https://validator.w3.org/feed/check.cgi?url=https%3A%2F%2Fanchor.fm%2Fs%2Ff315d06c%2Fpodcast%2Frss
The feed is set to automatically download: ideally this should not be the case and may cause problems, though this may not be the case. There may be an option to allow or prevent this in Spotify.