If you had lots of coins just sitting around on a beta exchange you can't be that mad at anyone but yourself. But the people on here seem very patient and confident that coinmarket.io will sort these problems out quickly.
I think that's a great vote of confidence for this exchange. I'm also confident that the problems will be sorted out quickly and once these teething problems are sorted coinmarket will be a very prominent exchange in the crypto community. Well done guys - anything I can paste into my signature about your exchange?
Back to my other point though - transfer times from wallet to exchange and back are so fast, so why not just transfer to wallet when not trading?