Data fees from your phone company may apply when you download podcasts. Many podcast apps have settings to limit the number of downloads per show; for example, downloading only only the three newest episodes rather than all new episodes. Also you may be able to set your app to download only over WiFi rather than using your phone's data connection. Please check with the settings on your phone and the app you use for more information.
Since RSS relies on third party apps, you may run into a few hiccups while trying to listen to your podcast.
If new episodes are no longer appearing in your podcast app, please try un-subscribing and re-subscribing with the same link that appears in the Overview section of the creator page.
If this still doesn't work, we recommend trying a different podcast app or RSS feed reader to subscribe. If this still doesn't work, let us know as it may be a problem with the feed itself.
Here is an article covering different apps that work (or not).