This isn't just a bittrex issue. I have the bot running on an older laptop and sometimes it decides to disconnect from wifi, or it decides that there is no internet connection, when this happens the bot ceases to function. Sometimes going to the trader tab and reloading your balance for qtl will work, sometimes it tells you that you need 1000qtl and to restart the bot. For the record, I have 20k in both bittrex and polo so while bittrex is the culprit sometimes, its not at fault 100% of the time. Its more likely that the machine your running it own is losing connection to the net for long enough that the bot errors out. Oh, and my internet connection is 30/10 so its not the isp or even my router at fault, its the flaky wifi on the machine I have it on, its likely the same issue your having, you just don't notice it because it usually autocorrects while browsing the net.