Just re-ran that WC Validator. This is the response I got:
Sorry
This feed does not validate.
line 39, column 1: href must be a full URL:
https://practiceoftherapy.com/wp-content/uploads/2017/08/Podcast.png [help]
<itunes:image href="
https://practiceoftherapy.com/wp-content/uploads/2017/0 ...
^
line 40, column 1: Undefined channel element: itunes:type [help]
<itunes:type>episodic</itunes:type>
^
line 47, column 1: channel contains more than one image (2 occurrences) [help]
<image>
^
line 1030, column 418: length of 4001 exceeds the maximum allowable for itunes:summary of 4000 [help]
... cast-with-gordon-brewer-lmft/id127...]]></itunes:summary>
^
In addition, interoperability with the widest range of feed readers could be improved by implementing the following recommendations.
line 2, column 0: Use of unknown namespace:
http://www.rawvoice.com/rawvoiceRssModule/ [help]
<rss version="2.0"
line 2, column 0: Use of unknown namespace:
http://www.google.com/schemas/play-podcasts/1.0 [help]
<rss version="2.0"
line 36, column 159: Encode "&" and "<" in plain text using hexadecimal character references. [help]
... her private practice and clinical blogs.</itunes:summary>
^
line 66, column 0: Use of unknown namespace: com-wordpress:feed-additions:1 (25 occurrences) [help]
<site xmlns="com-wordpress:feed-additions:1">107904931</site> <item>
line 118, column 3: itunes:summary should not contain HTML: a (24 occurrences) [help]
]]></itunes:summary>
^
Source:
https://practiceoftherapy.com/feed/podcastANY HELP WOULD BE APPRECIATED!