It is disappointing Bittrex have decided to delist ParkByte, unfortunately ParkByte Ltd cannot control what third party companies choose to do with their platform.
ParkByte Ltd was contacted by Bittrex a month or so ago to complete a full review of PKB which required many legal documents and detailed analysis of PKB in relation to recent SEC rulings. ParkByte Ltd were ultimately unable to provide all the required information within their 7 day deadline.
I assume the delisting is due to Bittrex tightening it's listing policies to adhere strictly to US regulations; on that note I would expect many other coins will face the same fate on Bittrex.
The ParkByte project is still active; like all good projects, we have faced quite a few challenges but we will continue to work through these.