My acc include all 2.2btc (BBR, xmr, coco ...) but now have lost. I do not see Withdrawal orders History, not certified mail. So where's my money?
This story actually 100%
The fact that you are unable to withdraw your 2btc from your wallet doesn't make bittrex a scam, technical errors do happen sometimes and the best thing to do might be to open a support ticket on their support center, probably you might get assistance very quick. Besides, even if they were a scam, I just don't think that they will scam 2.2 btc, that's too little compared to the money they accumulate per year/month.
2.2 BTC is just small even we do see on weekly basis profits of bittrex considering on the amount of trade volumes on daily basis which they can able to get from trade or conversion fees. 2.2 btc wont really be sufficient to ruin their credibility and reputation that they do build for how many years of operation and as being suggested why not try to contact their support and tell about your situation if its really real because they are the ones who can able to resolve such issue since it do happen on your website account.