PRASM probably pulled an exit scam on its investors. The Return on Investment of PSM is a almost negative 100% which indicates that all the investors that invested in its ICO lost all of their money as the token is worthless right now. Its price fell drastically from the very beginning and even the investors who sold early had to incurr major losses.
The information about its development team is also suspicious. The members are not verified and it is difficult to conclude if they are actual people or not. The promises they made in their roadmap for 2019 went unfulfilled. Their social networks are inactive from 2019 and there has been no new announcements about the project. It looks like a year back the development team ran away with all of their investors money and the project was abandoned to die in the market.
According to Coinmarketcap, PSM has no trading volume and absolutely none circulating supply in the market. It is listed on only one exchange but has no trading volume or active trades in that exchange.
Its website is no more available and the domain is available for sale which clarifies that the developers pulled an exit scam on their investors.