If it doesn't work, do Ctrl + Shift + R or Ctrl + F5 to recharge the cache.
Also, you can edit the CSS if you don't like the look of the widget.
If you want the widget in dark mode, simply change the class from "light" to "dark".
Also, the widget displays a small banner of your site;
To have one, simply make a banner of 82x25 (or more, but within that aspect ratio)
