Perhaps due to the influence of the market partly, partly because the project was not finalized at the end of the ICO, in part because the Bounty hunter dumped the coins, so these causes would lead to the coin being dropped. reduction.
And maybe the team maybe does not have the ability to do their project, generally young friends want to make project together but few months later they understood that they can't this. Also market conditions are bad like you said, there is a lot of reason for this drops.