Because of the Font Awesome license terms, Act2.1 has to use the Free version. If you have an active Font Awesome 5 Pro license and want to integrate it with Act2.1 please follow this guide.
Then copy its code:
And paste it into your icon module in your template:
Or in your page:
Instead of a Font Awesome icon you can also add up to three characters, with a code like this:
Please see also the Icon component.