Thank you for the details, I looked at your configuration and made a few adjustments. What I noticed that the the 'fill' options were disabled, so the plugin was not able to fetch the items matching the categories, as no other keyword relational options were enabled. I have corrected that.
Now it should display matches from within the matching 'Music Type' category. I believe the configuration should be correct now.
What I noticed that the automatic plugin placement will most likely not work, as it looks like that the content filter code part might be missing from the theme (I'm not sure). You will have to place the plugin shortcode either into the posts content, or directly into the theme files. Let me know if you need help with that.Best,
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