here is what happened:
They tried to push it into poloniex exchange and got rejected. someone from the inside knows it for sure, he is the one selling.
That's what I believe.
Very upset with the investment.
they could just release something to the crowd here, at least we could decide what to do with it.
right now just hoping for it to come back up a little
Short term, don't hold your breath. I wouldn't expect to get back above $1 for a while. Long term (like 6 months +), yes, it will come back up, and probably more than 'a little'. No one on the inside of this coin is selling; do your research, and look at this thread over the past 1.5 years if you have any doubts about the Devs and longterm holders. If you decide to sell, you will find plenty of buyers interested in increasing their holdings.
And what do you want them to release, exactly? They have provided plenty of updates, and if you want even more, Slack is very active. This coin has stuck to its roadmap since the beginning. They have delivered on their promises up to now, and given us no reason to doubt they will continue to do so. Good work takes time; it's the Devs' job to ensure the coin's longterm success, not make up 'fake news' to convince weak hands to hang around. The Devs didn't ask for the price to be driven up above $2 at this early stage, but it happened. Regardless, their priorities are, and should be, to stick to the roadmap rather than worry about maintaining an arbitrary $-value in the short term.
Ultimately, you referred to PIVX as 'an investment'. Investments go up and down, and their true value is only determined at the scale of years. If you are unwilling to exercise patience, whether with PIVX or any other investment, you are going to lose money.