Proof of conversation he posted.
https://imgur.com/a/dQU5DBZ
Here you can clearly see that im aasking he does he even using the cookies and check his answer, he using the cookies we didnt even provided to him as he didnt request so he tryed just simple to log into bank account , and banks this days have big securty to bypass, and that is why clearly he got the error of sign out autoamticlly.