Make sure you don't miss the fact that they aren't provably fair.  They aren't decentralized.  They haven't had 10k bets yet, or even 8k.  (Other sites will have had more than 10k bets in less time than it takes me to make this post)

Also they have no history of any kind to suggest they should be trustworthy enough to handle millions of other peoples money for long term.

Also, don't miss the last part of their "testing" where they casually imply that they will have full unrestricted access to all invested funds right away.  (Their logic is if they did anything dishonest, they would be caught and it would hurt their reputation, so of course they wouldn't do that, and everyone should trust them)