The Cardiostream application is only available via Internet Explorer (IE). The default browser in Windows 10 is Microsoft Edge (a successor to IE0; therefore, you must access IE separately.
To do so, type "Internet Explorer" in your search bar next to the start menu. You may want to right-click on the icon and pin IE to your Start Menu or Taskbar for fast access.
Click on the "Internet Explorer" search result. To launch the browser.
At this point, the browser will load and you can navigate to www.cardiostream.net to login.