But you already made a great profit and you were lucky because you could sell before the dump.
It has been hardly manipulated by a few telegram pump and dump groups, because i have a friend who is in one of those groups, and he is always giving me signals but i do not have time to invest in altcoins just for a pump.
During hype of POS I managed to buy 300POS at 0.004 eth price Ive been monitoring it since then. There is time that POS reach 0.01eth
And yes, the devs are pretty inactive, i dont know why it is happening because this coin had a great potential, it seems that they only wanted to raise as much money as they could.