after a couple of days there will be burning a large number of coins, it always has a positive effect on the price
but in a short term only right?

, Paycent is still need more decent exchanges to get more volume and exposure to the public. Also Paycent is not listed too in coinmarketcap right?
The volume was too low to get listed on CMC. And it was also possible to buy PYN through the app, at the market price. So lot of long term holders used this option, and this volume was not registered on the exchange. The price would have gone up, for sure, but early adopters used this option as a kind of reward from the company. It was kind of OTC offer for larger quantities.
I wouldn't be surprised that after this burn, they decide to limit that liquidity and force the buying on the open market.