Having a major podcast issue

Hi there! 

The latest episode of my podcast is posted, but the audio isn't playing on the site, and it's either not being discovered by podcast apps (Spotify / Overcast) or is displaying an "Episode Unavailable" error (Apple Podcasts - see attached screenshot). On Apple, it *is* showing that the episode exists.

I took the audio down, and then reuploaded it, and that hasn't fixed the issue. I've tested the audio on my Mac, and it works just fine.

I don't think this is an RSS issue, as it's showing up in Apple Podcasts, but I'm getting the error message.

I'm at a loss, and would really like to get this episode up!

Any help out there?

Thanks!