Unable to use Icons.

Hi everyone,
First of all, I would like to thank the team at Themeisle for building such a wonderful theme, absolutely in love with it.

I am new to WordPress, this is my first attempt at building a WordPress site and I and running the whole thing on the Local Server (WAMP).

The issue is that I am not able to use the default icons provided with the theme on my site. I am talking about the icons that are used in “Our Services” and “Contact Info” sections for mail, maps marker, phone, etc.

These icons were there before but now they’re gone somehow (maybe I screwed up something).

I tried putting them back on from the theme customizer but they are not showing up no matter what I do.

Is there something that can be done about this?