maybe you can add https://cryptexplatform.com/ because it has the same scheme like the website in the first page but if the user use the promo codes it gave you 0.5BTC

https://bitcointalk.org/index.php?topic=5158785.0 (http://archive.is/0LdkW)
https://bitcointalk.org/index.php?topic=5158782.0 (http://archive.fo/2e5dC)