Ultimate Member v3: Password Reset 'um_before_changing_user_password' hook

functions.php

// 'um_change_password_process_hook' - use action hook 'um_before_changing_user_password' instead

/**
 * Fires just before the Reset Password process when Ultimate Member Reset Password form data is validated.
 *
 * Note: Use this hook for adding custom actions before reset user's password form. It's the first hook after the validating form data.
 *
 * Hook: um_before_changing_user_password
 *
 * Type: action
 *
 * @package  um\core
 * @since    3.0.0
 *
 * @param {int|null} $user_id User ID whose password was lost or null if user doesn't exist.
 */
function my_before_changing_user_password( $user_id = null ) {
	// Code that you need to run before user password reset via the Ultimate Member - Password Reset form
}
add_action( 'um_before_changing_user_password', 'my_before_changing_user_password', 10, 1 );