To use Rakuten TV, it is necessary to have a computer with either Windows or MAC operating systems with Adobe Flash version 10.3 or higher.
First verify that you have met the minimum technical requirements explained here.
You can check your version of Flash here: http://helpx.adobe.com/flash-player/kb/find-version-flash-player.html
Experience has taught us that the very best combination for using Rakuten TV on your computer is Mozilla Firefox updated with the latest version of Flash Player. You can download Mozilla Firefox here: https://www.mozilla.org/en-US/products/download.html?product=firefox-21.0&os=win&lang=en-GB