Coinsbit and p2pb2b are both connected to Valerii Solodovnyk

Here is a nice article about the scammer

https://www.cryptoinfowatch.com/p2pb2b-what-happens-when-fraudsters-operate-exchanges/

P2PB2B – What Happens When Fraudsters Operate Exchanges?

The owner of the exchange is not listed on the site, even though independent investigation shows that his name is Valerii Solodovnyk, operating out of Russia. Information available on the site suggests that it was registered in Estonia although this could not be verified.