Actually i am using Kiwi Browser for long time. For a few months now, the script in Kiwi has been having problems and not working properly. I checked your script yesterday in the Firefox browser.
Anyway, I installed the script on my other regular browser, Mises. It works fine. When I scroll through the forum, when I come across a wallet, I click on it to see how many bitcoins are in that wallet. I am very curious to do this. Lol

You can also include Mises Browser

Odd choices of picking browsers.
I think most people use Chrome, Firefox, and Tor.
I have never heard of the Mises browser. I heard about Kiwi Browser, but never used it. I am curious why you picked those unpopular browsers over the most well-known browsers. Do they provide something extra that usual browsers don't? This might be off-topic here, so it would be great if you could post about it on our local thread.
Anyway, Nice tool bitmover. It is good that you made it available for most browsers.