Serious Podcast Confusion

I THINK I’m on 3.9….

Anyway, I’ve been up and down the FAQ, the Podcasting guide, iTunes podcasting guide, a third party site, and several of the topics here that I’ve found, and I STILL can’t get iTunes to acknowledge my RSS2 feed. It just keeps saying:

“We had difficulty reading this feed. Bad http result code: 404”

I’ve tried so many variants, but the one I keep coming back to is:

https://musicatozpodcast.com/wordpress/?feed=rss2&category_name=podcasts

I’ve created a category for my posts called “Podcasts” as recommended, but I only have one post so far.

Could anyone give me a hand with this? Much much appreciated.

My site:
musicatozpodcast.com