Hi Angelo, thanks for the email, it's a difficult one as my problem is not that iTunes is not reading the feed correctly, but that the feed itself is wrong.
I just set up another podcast via category podcasting (enabled and with enabled blubrry support) and when I go to the Feed Validator I see that the feed is pointing at itunes_default and rss_default jpegs instead of the ones that I've set up on the category podcasting page which is a different image. Could that still be related to caching (I've cleared my cache with WpEngine just in case) or with something else? I'm using Ultimate Category Excluder to make sure the right posts go to the right categories and not to the main feed...
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