Episode 2 doesn't appear in feed

I’m very confused. Episode 1 worked and then I created Episode 2 as its own feed. But it seems like the feed should be singular and every Episode should add to the feed. My feed URL is: http://www.allergyfreemouse.com/feed/fa-fastpass-mp3/

Also, iTunes doesn’t like my current config and Google Play seems to want a singular feed that lists all of your episodes.

I’m about to publish Episode 3, so I want to figure this out.

I reviewed the other issues similar to these and I’m still missing something.