Podcast episodes are displayed in the order by date. The episodes order can be changed by updating the Published Date in your WordPress Admin dashboard.
1. Sign into your WordPress Admin dashboard
2. Go to Podcast > All Episodes
3. Beneath the episode title, click Edit
4. Click the current Publish date and select a new date:
5. Click Update
NOTE: The update will be applied immediately in WordPress but Apple Podcasts, Spotify, and other podcast listening platforms could take up to 24-48 hours.