Are you sure that the app doesn't have any malware or any kind of tracking the information received on the phone like our personal data etc? What does the app relate to ? Maybe people who try it give more information regarding the same
I don't know why OP doesn't publish the information here. I have received his PM about the information, I will describe a bit here so you have a quick overview. Basically, this is a new website for online debit cards. I tried to register, but my country is limited 
so I could not check the authenticity in his offer. There is a list of accepted countries there, one thing I'm sure, you need to perform a chain of identity verification 