Podcast feed empty (no items) since server move

Since a server move a week ago, my podcast feed is empty (there are no items): https://beyondjazz.net/feed/podcast
?
?The category page is https://beyondjazz.net/podcasts (I have the WP No Category Base plugin to remove “/category” from the URL, and the slug is “podcasts” while the category is “podcast”. The category feed is fine: https://beyondjazz.net/podcasts/feed
?
?In the podcasting plugin I have picked the podcast category, and I have already tried adding and removing a podcast post to rebuild the feed, but it stays empty.

https://www.ads-software.com/plugins/podcasting/