If you have a Patreon RSS feed or other premium RSS feeds that doesn't require login authentication, you can subscribe to the channel by searching the RSS URL in the search bar on Castbox Android or iOS App.

If the RSS feed requires authentication, you will need to embed your username and password in the RSS URL by following the patter below:

http://username:password@the_rss_feed_url/ where 'the_rss_feed_url' is your podcast RSS feed url WITHOUT the 'http://' prefix.

After that, you could simply search the supplemented URL in the search bar and subscribe to it on Castbox Android or iOS App.

If you still fail to subscribe, would you mind sending us the URL with your username and password? You could reach us at contact@castbox.fm. Please do not worry, we would only use them for a test.