WD My Cloud stolen

So My WD My Cloud was stolen. I bought it at Staples in 2014. I still have the receipt but not the serial number. WD Support and Staples both say they can’t help me. I want to let the Police know, hock shops and online sites know the serial number in case the thieves sell it.

Any tips on how to deal with this?

Any help is appreciated.

@pipertim Have you gone to Support and checked there. You will need to enter your email address and password. You would have created this when you registered your device.

https://westerndigital.secure.force.com/ind/id_home

This image shows the information for my 1st generation My Cloud.