Solved!
Thanks guys!
I desinstalled the unit again, disconected the cables, all this was done before.
But I found.
In the "Audio Options" anything results a Mono result. Except for the "Wasapi Shared", the only I was unaware. I see no reason for a exclusive versus shared option, for sure I need to read again the manual.
But now I get an stereo result.
Yeahhh!