Do we get a refund also if different amounts are bet with the same chance? For example, I lose 10 consecutive BTC0.01 bets and then I bet BTC1 and lose, would I get that BTC refunded?
All amounts will be refunded it just has to be in the same %chance. For example if you use the martingale system yout 1, 2, 4, 8, 16, etc.. will all be refunded.
So you're essentially saying that if this game is in fact fair, a smart player with a reasonably sized bankroll cannot lose?
There are so many ways to exploit this too. I can make min bets until I lose 9 times in a row, then do a max bet, knowing that even if I lose I will get this bet back. According to what you're saying, this is not a problem and you are perfectly fine with users doing this.
New approach to Bitcoin gambling.
You are free to play how you want to play. We do advise you don't play recklessly and only gamble what you can afford to lose.