Interesting. The theme might use a different method of displaying articles on the blog page.
Can you add temporary ftp and back-end details to your test server so I can check on the code what exactly is going on? It appears to me that the plugin might detect that it's displayed on a single page, when actually it isn't. I would like to investigate why.
To safely add the details you can edit your initial post in this thread, or upload a .txt file attachment. Both methods are safe and visible to only me and you.Best,
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