That's your feed URL, and the URL of your iTunes Store page is
https://itunes.apple.com/gb/podcast/coaches-ally-helping-others/id1039601485?mt= 2
There are four episodes in the feed, on posted on September 2, the others posted within a few minutes of each other on September 12th. All the4se episodes appear when subscribing in iTunes.
In the iTunes Store the three episodes of September 12th appear but the episode of September 2nd. The most obvious (though not neccesarilyi the correct) explanation for this would be that at the time the Store last checked the feed the Sept 2 episode was not present and you have added (or restored it) since then. otherwise I can see no obvious reason why it isn't showing. However the 'content:encoded' tag for that episode (which iTunes does not read) contains a 'figcaption' tag within it - and as no such animal is recognized by XML it's possible that its presence is throwing the Store. I would advise removing it and keeping the 'content:encoded' tag simple.
Incidentally posting three episodes very close to each other is counter-productive for subscribers as their copy of iTunes checks the feed periodically and downloads the just latest episode automatically - in the present situation it will miss the two preceding episodes, though they can still be downloaded manually, of course.
Your 'description' tags contain detailed info on the episodes but iTunes does not read this: your 'itunes:subtitle' and 'itunes:summary' tags are the same for each episode.