Plugin breaks on IE 11 and Edge

The plugin doesn’t work with Internet Explorer 11. It displays the widget, which should be located in the right sidebar, at the bottom of the page. After finally scrolling down to the bottom of the page to see the widget, it becomes sticky, obscuring whatever content it slides over when the page is scrolled up and down. Also, the display of the widget is cut off and the buttons aren’t displaying the right background color. The background color issue also occurs in Edge.

Plugin hasn’t been updated in over a year and support is non-existent. They’re still selling a ‘Pro’ version of this on their own website, so buyer beware.