I just downloaded the wallet and synchronized (only took about 20 min) and then i started mining to that wallet and it works pretty good. fucking scam web wallet sucks.
Nevertheless, you shouldn't do the mining. Because, the reason for mining now evaporated with new diff level. Gains are %60less now. Plus this WebWallet FUD lessens the trust of this $hitcoin.
Scammer MKTCoin and its owner!!!
Official Web Wallet stole all our balances and won't let us transfer to the exchanges