The site is beyond extremely vulnerable and buggy. 
I do not think so. The base script is buggy. But all should be fixed...
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Oh looks like no more faucet and I guess no more players because of no faucet
The faucet is outsourced: Bitearn.XYZ. We will think about that again, but that was only for testing the game.
You can test it with a bet of 0 also.
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also where is it possible to change the seed
That is not possible yet, but you are right - that makes sense. I will implement that.