Are you talking about the 1 Bitcoin competition? Is there a reason why Mines don't count nor increase your points in the leaderboard? The competition rules don't mention any casino games that are restricted. In fact, it says you only have to wager $1000 on ANY CASINO GAME within a 24-hour period. Only bonus money bets don't count as valid entries.
Yes, the contest terms didn't mention anything like that. But how would you know how much you wagered? Metawin has a daily wager contest, and I was checking that leaderboard to track my wagering. But I realized that my position wasn't increasing because the daily wager contest doesn't count wagers from Mines and a few other games. I completely forgot for a moment that the 1 BTC contest doesn't have such a rule.
You were completely unlucky there. Your step was like a newbie user in gambling. It wasn't a good decision to put 80% to 90% of the bankroll on a low multiplier for wagering purposes. Maybe your luck is waiting to win the 1 BTC prize. Unfortunately, you haven't confirmed your entry

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Well, you can say that. But you know, many players do that if they get a losing streak on low payouts like 1.05x. I got a few reds before that bet, and I thought the streak wouldn't increase. So I tried to recover the loss of the previous bet. As Zwei predicted, I placed a couple of max bets then, and another red was enough for me to get busted.