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Comcast and I use a VPN service with it.

Interesting. Had issues with Dish before but not Comcast. Have you tried it with the VPN off?

No, as I have never had issues with it on. I will try it off though and get back to you shorty.

With my VPN off, same result on all 3 browsers @guiltyparties. On both Edge and Chrome, I just have an entirely red page with nothing on it. On Brave, I have the error I provided you an image of above.

All after clicking on the "Shorten" button ...

This is after you put in your URL and not before, correct?

Yes, I put in the URL provided above, then customize it, as shown above. Then click on "Shorten" ...