I like the design except one small detail. Why is that when I try scrolling through the website, I need to scroll up rather than down? It's a little odd and feels like the website is upside down rather than positioned correctly. Again minor but very hard to navigate around.

On another point the domain you're using is also cheap. ".space" is one that could be purchased easily.

That being said it may not be a scam right now. If I were anyone who wants to double some of their btc, I'd deposit maximum 0.001 btc. No need risking anything else this site could shut down but may payout for a while.