During past week I was monitoring 4 coins which had received de-listing warning from Bittrex because of their low trade volume. Esportscoin, Ghostcoin, Whistlecoin and Apex. They were supposed to be de-listed on January 9th. Apex could hit the minimum trade volume in last day of deadline and survived. The total trade volume of Esportscoin was around 1.30 - 1.35 btc and it only needed 0.05-0.1 btc to survive but it couldn't. So Bittrex de-listed it today. Same scenario happened to Ghostcoin too. But something strange happened for the Whistlecoin for the second time during past 2 weeks. Its trade volume for the whole week was less than 0.2 btc (almost 0.02 btc per day) but Bittrex has not de-listed it for the second time. Whistle was supposed to be de-listed on January 2ed too as many coins were removed i that time. Because its volume was less than minimum average. But they did not de-list it on January 2ed and surprisingly they extended its warning for another week. And now they have not de-listed it again. What does this paradox mean?