Can you post a screenshot of your settings here?
What is your site url?
Font Awesome has 3 different settings, one to inline, and 2 to enqueue them alone.
Enqueue them alone makes sense, because fontawesome is a big library that you may want to exclude from the tests.
FVM will only capture files which are enqueued with the wordpress hooks and filters api.
If a plugin is printing them on the header, or if you edited the theme to hardcode those resources, it won’t be captured or merged by FVM.
More Info:
https://wordpress.org/plugins/fast-velocity-minify/faq/
Also if you have multiple fontawesome files, something is wrong.
You should probably remove them and leave only one.
Also note that FontAwesome 5 is not backwards compatible… so you cannot use both versions on your site.
