Fake Eleaf I Just 3 or what?

Hello, so I bought an Eleaf I just 3 on eBay, I got it after some couple of weeks.
I checked the Eleaf legit site, to see if this is real. The battery part has no weight, like it doesn't feel as steel full as the real I just next gen.

Eleaf website results posted as a picture beside this post

Does the results mean its fake? the serial number and the security does match tho
It has all the parts inside. new glass, charger and essentials
HELP
The only thing im in doubt if this is legit if caused the general weight, it does not feel like a orginaly just mod (battery mod)
but overall it does not feel like plastic, it does just not feel like the original product steel like the just next gen?

// Is it fake, or legit? it could also be a great copy?

If you did not check the security code more than 10 times, it may be a fake.

So I voted other. I would message the ebay seller and ask for a refund.