You should be able to use the last 8 digits of your Engine # from the window sticker.
Here is the link for more program info if needed too: Hyundai Electric Vehicle | Electrify America

 

The above is correct and here is a video on the process Dealer should have set it all up for you before leaving as well as Bluelink

 

The establishment of the EA and Bluelink accounts is an integral component of the vehicle delivery process to the owner. It is the responsibility of the trained sales representative to ensure the completion of this task.
Kindly request their return to finalize this outstanding obligation.