Hope you are all well.

I've just bought this SDR dongle :http://www.ebay.co.uk/itm/140803976327? and downloaded SDR#. However, when I go to SDR# it freezes and displays the message:
A connection attempt failed because the connected party did not respond after a period of time.
What could be the problem here? I am running Win 8.1.
Many thanks for your time,
Sparky