How to get login/password from Talkatone SIP application?

Question

Android

The Talkatone application gives the user a personal real phone number. It is inconvenient, so I want to use the standard Dialer or another SIP client. There is a possibility that Talkatone works via SIP, so I'm interested in the ability to get authorization data from it. How to do it?
UPD: there is root and xposed.

Answer 1

Put the root, rummage through the application data.