2 sellers of same game – Escape Challenge 4:Escape The Room Games Review

I literally just played this same game by the seller Teng Hu (Escape The House: Hotel Room Escape games). While I realize Sean Liu and Teng Hu May be the same person, I don’t understand how he could copyright one under © Sean and the other under © TengHu. Shouldn’t it be one or the other?
Review by sandy198796 on Escape Challenge 4:Escape The Room Games.