Possibly the BT is not working? Have you tried deleting/reloading the app in you phone, forget this device and repairing? If they are under 5yrs old should be able to claim via the nz agent. There are also heaps of how-to's on youtube.
I have set of the 3000bdx and set up both of my rifles(sold one now) in the custom profiles and adjusted the velocity while validating, and the solutions are correct to 800 using both Leupold and Zeiss scopes. I like them.
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