Same here. Works in OS X but not in Windows 8.
The plan was to use it when tracking a duo with a piano and a singer but as it does not work I have not been able to use it (and I have lost recording time and mood when trying to get it to work). I have tried all tricks found but it just do not connect (it does rarely when fiddling with things but is then very unstable)!
A tip for Windows users looking at this product. Test the free version first.
If that does not work, the paid version will not either (learned this lesson a bit late…)!