Unauthorized When Sending Production Origin Header #9

I'm able to use https://thingproxy.freeboard.io/fetch/http://79.111.119.111:9107/7.html successfully via Postman and my web app in the browser while sending http://localhost:4200 as the Origin header.

However, when I set Origin to my production URL (http://radio.browninglogic.com) (both from Postman and from the deployed web app), I get the following:

{
    "this": "failed",
    "with": 401,
    "because": {
        "message": "unauthorized"
    },
    "id": "lKKaSKW3f"
}

Strangely enough, when I clone and run the API locally, it appears to work properly even with the same Origin header that's causing it to fail when using the deployed site (http://thingproxy.freeboard.io/fetch/url).

Can you point me in the right direction? Is there something that I'm missing?