You may want to customize the logo in the wp-login page without using a plugin:

Below code in the function.php will change the logo and disable redirect to wordpress.org page.

/**Change login page logo**/

if( !function_exists( 'custom_login_logo' ) ){

    function custom_login_logo() {

        echo '<style>

            h1 a { 

        background-image: url("/apth/to/your/logo") !important;

        cursor: default;

        pointer-events: none;

}

        </style>';

    }

    add_action( 'login_head', 'custom_login_logo' );

}