That's the same person operating under a different name.
I think they're trying to fraudulently drive up their sales ranking by making free products look like purchases. They sent me money to purchase a case for all three versions of the S21, even though I have only the Ultra so I can't even review the other two. I agreed to the arrangement and made the purchase, but to avoid dishonesty, I submitted an (accurate) review that described the whole pseudo-purchase process (and Amazon rejected the review because it wasn't a legitimate purchase).