This doesn't work anymore, even with the classical item pages. I'd change my review if this gets updated.

After 25 years of working as an IT specialist tech and doing quality control in the technical communications field, I know how to spot a bad extension, and this one obviously doesn't work. Even as noted by the developer in the extension description, 'This extension only works on classical item pages* and not the newer style‡ of combined listings from multiple sellers.', which makes it about as useful as a cistern pump handle in 2022.
Unfortunately, after installing this extension, I was still getting all kinds of items sold and shipped from China. In my opinion it appears that either the developer didn't thoroughly test this extension before launching it, the developer of this extension is from China and is attempting to trick the buyer by promoting Chinese knockoff garbage, or this extension could possibly even be Chinese spyware trying to gain access to your computer.
There are other extensions out there to block Chinese sellers on Ebay that work much better than this one.
By the way, Thank you for the professional reply comment but I'm sorry to say, I'm not an idiot and/or a troll, I'm just tired of developers pushing poor quality extensions that don't work, have an ulterior motive like as to gain access to your computer and the data within, are obsolete or are just a waste of my time.

🌐 super

I want to contact the writer of the add in but I don't know how. So I am writing my question here. What does "Seller location: " mean? I get this on all classic eBay pages?