Luis, is the customer platform running on a VM? It would need to be responsible likely for decoding the tagged packet and forwarding to the PurviewVM.
a tcpdump, if seen with packets like above, should indicate your getting netflow packets to the purview appliance. The purview appliance must then be sending data back to the Netsight appliance to display the data. As mentioned above, sometimes the Netsight appliance is used for looking at applications flow, it is the default , and needs to be changed to the Purview appliance.