We'll create fresh WordPress site with Block for Font Awesome installed. You have 20 minutes to test the plugin after that site we'll be deleted.
This plugin allows you to display any Font Awesome 5, Font Awesome 6 or Font Awesome kit icon as an editor block (Gutenberg) or a custom HTML block.
You can also add the icon as HTML code or, inline, by using the [fa class="fas fa-fw fa-phone"]
shortcode.
Read more about the Block for Font Awesome plugin here.