Flash remains the better option for viewing the content in browsers that support it. Most browsers today have Flash disabled/removed so you will need to enable it manually. If you do not enable Flash then the all training content should be displayed in the HTML5 format.
Get Adobe Flash Player here https://get.adobe.com/flashplayer/
Latest information for Flash for Platforms and Browsers http://get.adobe.com/flashplayer/about/
Minimum Adobe Flash Player 10.3 or later plus any of these web browsers: Recommended is the latest version available Here
Minimum versions listed here: recommended is always the latest version of a browser.
Windows: Internet Explorer 9 and later, Firefox 1.x and later, Google Chrome (latest version),
Mac: Firefox and Google Chrome (latest versions)
Linux: Firefox (latest version)
Mobile: iOS - Puffin Browser. Android -
Alternatively, you can use a Remote access tool (e.g. Teamviewer and/or Splashtop) to 'stream' what is on your PC to your iPad window. Smartphones are not recommended due to small screen sizes.
Windows: Google Chrome, Firefox and Internet Explorer - latest versions.
Note: Microsoft Edge is not supported with HTML5
Mac: Safari 6.0.5 or later, Google Chrome and Firefox (latest versions)
Mobile: Safari in Apple iOS 9 or later - recommended: iOS 11. For Android-based devices, use Firefox (latest version).