Podcast Feed not working

Hello.

We had a reliable podcast feed from our previous Squarespace 7 site we run for our business. When we made a new Squarespace site in 7.1, to make use of membership (not for the podcast), last year, I have been unable to get the feed 'feeding' to any of the platforms.

I have followed all the provided instructions, and gave them months to resolve redirects etc, but up until recently they would only show the episodes on the original site. Recently I disabled the feed and redirect etc from the old site in the hope that this will resolve it, but unfortunately the new site has not taken it's place.

I had to re enter each episode as part of the move, and I also chose to host the MP3s on our own server to navigate SS MPS limit.  I have added only one new podcast, so the difference is just episode 44.

Can I please have some help to get our feed back up?

Following!