They claimed the terms are informal. And they were agreed to modify the terms to add POD must be done. Therefore, they can help us more like adding more strict terms to avoid a scam because they can talk with the scam dev. BTW, if it is a scam, bittrex will also take responsibilities because they host the ICO
Bittrex's responsibility is to uphold their terms and conditions of the ICO (Wallet, Blockchain and Blockexplorer) which have been met... that is all
If bittrex refund everyone after all the ICO terms are met then they are legally liable.
If it is a scam and bittrex send the devs the btc then they are NOT liable because the ICO terms that ALL parties agreed to have been met.
YOU AGREED TO THESE TERMS WHEN YOU BOUGHT CLSTR