I checked out the website. I like the design and that there's a tutorial that explains how to play. The demo version allows to experimentally place the bets and see how it goes, which is also good. I did not like that there was sound right after opening the website, and I wish the game had more animation. These space creatures are funny, but it would be more engaging if they were moving and, say, taking out the right number or something.
Your 'terms' page should definitely say more than it does, just look how it's usually done on other websites. I also did not see the house edge/transaction fee your website lives off, and it should be stated in the Terms or elsewhere. Apart from that, I think it's a downside that one can only register using existing social media accounts, rather than just an email. People might not want their gambling accounts to be linked with personal profiles.