Php-Login-System | nullThis is a login system using hash feature | Cryptography library

I am writing a small application using Qt and QML that uses the example in the Qt documentation WebEngine Quick Nano Browser.

In this example I am trying to access to my email. I can do it, but I am trying to enter username and password automatically so that I can instantly log into my emails.

Basically as an example, after launching the application (my email address is hard-coded) I can see the username page of gmail, but here I have to type my username to access to the next page that has the password::

Here I have to type my password:

Only after doing that I can access to my email.

The Expected result would be as soon as I run the application, I would like to go straight to my email without inputting username and password

The code that I am running is the following:

I'm developing a C# application that allows the user to register and login. I'm planning to use MySQL database and PHP on server side code. Here is the server-side code that I plan to use. This code copied from the below two articles.

(Secure) PHP Login System (Protected Against SQL-Injections)
Login System with PHP

register.php

I followed this answer for php login system (Remember me) PHP login system: Remember Me (persistent cookie)

I was able to set the cookie successfully using