not only happened to the BITS, almost all of them experienced a drastic price decline, even though the platform developed well but did not guarantee that prices would be good, wait a while, maybe it will get better next year
It will never get better, Bitcoinus is yet another of the scam ICOs that were funded and assisted by TokenDesk. All these Lithuanian ICOs have been scams with the same people behind them.
More information is available here -
http://www.icoinvestigation.com/bitcoinus