I’ve noticed that just by installing latest Elementor + Elementor Pro + GP Aspire import, the fontawesome icons are not loading (for example the social icons in the bottom)
I noticed this some days ago with a different site, and I though it was just something random
The solution is to load Font Awesome 4 compatibility (Elementor -> Config -> Advanced)
Maybe you should consider upgrading this because it seems to be something to be deprecated at some point in Elementor