Guys, before you keep guessing or spread wrong info: BLK is no longer on BTC38 for the same reason as e.g. DASH; NEOS etc. pp: They are about to close due to china regulations.
Nothing to do with the coin itself, volume or whatever.
JUBI did already reopen outside of china and trades BLK: https://www.coinegg.com/, there's also a new BLK centric exchange called http://BLK38.com BTC38 did say that BLK would be on their platforms again as soon as the reorganized themselves outside of china, as well.