Dear Roberto Socorregut,
is the PEGODA reader being detected by your PC ? usually what happens is that customer place the tag over the reader before connecting to RFIDDiscover, so please before putting the tag on top of the reader, connect the reader to the PC > open RFIDDiscover > connect reader > put card over the reader then activate tag. usually what happens is that the reader is detected and when you put the tag the OS takes control over it.
hope I was clear please let me know if after this process, this problem keeps happening.
BR
Jonathan