far is marked on the Font Awesome web site as a Pro font. https://fontawesome.com/v5/docs/web/reference-icons/

but on the link that you have included it is marked as a free font https://fontawesome.com/v5/search?q=circle&o=r&m=free
So FA have created some confusion as to what is what.
The aware.css file at /Tomcat/webapps/AwareIM/aware_kendo/resources/css controls this at
.fa, .fas, .fab {
font-family: 'Font Awesome 5 Free' !important;
}
.far, .fal, .fad {
font-family: 'Font Awesome 5 Pro' !important;
}
Move far from the pro to the free group.