I had the same question, but I managed to figure it out. Basically, if you get any plugin that allows you to customize you /wp-admin/ login page. It will also change the screen for the 2FA code too.
I kept it simple, and just changed the logo by adding the following code into my child-themes’ functions.php. Then, I uploaded an 82×82 square logo in my child theme’s root folder called rentermade-square-small.png
//basically adding an action to put my logo instead of the wordpress logo
function custom_login_logo() {
echo ‘<style type=”text/css”>h1 a { background: url(‘.get_stylesheet_directory_uri().’/rentermade-square-small.png) 99% 99% no-repeat !important; }</style>’;
}
add_action(‘login_head’, ‘custom_login_logo’);`
