There is no way to track a WVMLS Supra lockbox, however... 

if you have assigned a WVMLS Supra lockbox to a listing using WVMLS Paragon, SupraWEB, or the Supra eKey app, we would be able to see the MLS number.

reach out to WVMLS and provide the serial number of your lockbox if you believe you've assigned the lockbox or feel free to call us directly at: (503) 399-8657.