I would give my opinion about this case

First the Duckdice admin 1 was accusing him because the NoMercy66 is no longer the original owner and he's able to pay any big bonus to the original owner. Even he's not promising he would pay 10% lossback, but he would pay a big amount bonus. I and other users have been asked him multiple times to compare the IP history of NoMercy66 account when he's still active betting and right now, but he doesn't reply that question.