Podcast Episodes - Playback Error after migration from Squarespace 7.0 to Squarespace 7.1.

Hi! My client's podcast encountered a problem of "Playback Error" when trying to listen to the podcast via Apple Podcast. I checked with Google Podcast, Podchaser, Castbox, and encountered the same issue. However, they seem to work fine on Spotify.

Backstory: Earlier this year, my client move her site from Squarespace 7.0 to Squarespace 7.1. Then just recently, she received many emails from her podcast listeners stating that all her episodes prior to January 2022 have a "playback" error on Apple Podcasts.

We've contacted Apple, and after further review, they have been able to confirm that episode urls listed in the RSS feed have been deleted. See attached for one episode. Apple advised us to contact the hosting. 

Anyone knows how to fix this?

Thanks!