Unless I understand things wrongly, the 1.01 odds or the slow-but-sure-with-minimal-risk bets will need an eternity. The terms disallow the player to bet on casino games. It won't count towards the wagering requirement; so, good bye dices. And that leave the player with... sportsbetting? E-sport if he wanted something that a tad bit faster?
That 1.01 is based on sports betting odds. If OP deposited 10 mbtc and needs to wager 700 mbtc, they’d have to do it 70 times without losing. It’s almost guaranteed since 1.01 is basically a win, unless you’re super unlucky. But even with those odds, bettors usually don’t bother with 1.01 or even 1.05, it's just too risky compared to the reward.
Uh, actually, the point I tried to raise here was the exclusion of casino into the calculation. There was a past case with a casino [I can't remember which] where the player faced "similar" situation, in a sense that they can't withdraw due to rollover requirement [can't remember either whether they got an involuntary bonus or it's a simple AML situation], and the casino rep suggested low-risk casino games with low odds, so I assumed that low-odd betting on casino games is something that casinos allow, to facilitate the rollover requirement.
I find it quite odd that this casino [their involuntary bonus aside] didn't include casino games into the wagering calculation.
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In case OP hasn’t explored all the emails yet, it might be worth a shot.
We’re very sorry to hear about your situation. We take your concerns seriously and want to assist you.
Please email us at help@nitrobetting.eu so we can address your case personally. I'll try to send their rep a PM, see if they'll address to this matter. Can't promise much, though, as they don't assign any personal contact to me, and their account has been away for almost a month now.