The IMEI number shows as a "Flip-phone" in their system so the call center person had to fill out a form since the IMEI number didn't conform to VZW's numbering convention...I didn't have this issue with an unlocked Moto-X Pure.
At first they instructed to take it back to Best Buy - but I argued against that. It's unlocked...and should work.
So now I sit and wait for the call...that they were able to activate it, or they can't... Crazy.