When working with Technical Services, you may be asked to provide the serial number for your Smart GFCI Outlet. You can find the serial number in the My Leviton app, by clicking on the 3 dots in the right upper corner of the tile with the Smart GFCI:
Where can I find the serial number of the Smart GFCI Outlet?
Choose device settings...
and then device health...
Your serial number can be located on this page.