just now I create account, after I enable 2FA , try to relogin but not pass :DD 
 support answered :

On Sun, 4 Aug 2019, 18:28 Support p2pb2b, <support@p2pb2b.io> wrote:
Hello, please, clarify your question. You can not pass 2FA?
Dear customer, please, wait, we will check your situation

 after I create another one with another mail and same.