The shortcode works but there is a problem what to do?

Question

WordPress

Hello ! I created a Shortcode Checkmark on Profile using this code:
<?php
/*
* Plugin Name: Shortcode zifostudio
* Plugin URL: https://zifostudio.com/pluginzifostudio/shortcode-...
* Author: Zafar Rahim "WP-PlUG "
* Author URL: https://zifostudio.com
*/

add_shortcode( 'verification_from_zifostudio', 'show_verification' );
function show_verification() {
return '';
}

Everything works, but there is a big problem. When you click on the profile, it goes to the author's page, and there is such a problem There, too, a checkmark should be displayed and not the shorcode code ([verification_from_zifostudio]) here is my sitehttps://zifostudio.com/ . Please if anyone knows please tell me.
Can this be fixed at all? I have been looking for this problem for almost 5-6 days, I can not figure it out with this problem. Thanks in advance