Yes, there is a good chance that there are some mismatches between users' Hive names and Dash names. For example, @thedessertlinux goes by thedesertlynx everywhere else, including on DashPay, but lost his Hive keys to his @thedesertlynx account.
We're in discussions to support adding your Dash username to your INLEO profile right under your Hive username. That would be very helpful, because then you could know who to look up on the Dash network.