Well actually link luckygames.us redirects to luckygames.io refferal link. I think a gambler bought that domain and has redirected to his refferal link his refferal ID is 21124124.

I think that user is trying to increase his refferal earning by creating fake competition and it is also possible that Luckygames.io own this site but given how they responded to your questions it doesn't seems like it.