Line Awesome icons not working

Hi!

I have a problem with Line Awesome icons. I have link the correct icon classes from the line awesome website, but no icon is showing up on my website.

The problem is with the elementor-widget-container (in yellow box – leveredged pricing and guaranteed results). The icon visible above Global Network came with the theme and works, but I will need to change it as well. The other place where the icon only shows up as rectangle is in Our Team section (when you hover on the first person’s image).

And yes, I also check that from Settings-Elementor-Advanced Load Font Awesome 4 Support is turned on.

Any advice on how to fix this? I also tried accessing the feature file from my theme files, but I am not sure where to add the <i class=”icon_name”></i> for all the icons.

Thanks in advance

The page I need help with: [log in to see the link]