Contact Info: How to add icon

Hi, I am trying to help my wife with her website though I am not experienced.
Using the Contact Info box, I would like to add a new contact option to those existing like phone or email. Specifically, I want to add What’sApp – but I don’t know how to implement the icon.
For example, for the address, the field icon-class contains “pe-icon pe-map-marker”, whatever this refers to. So, what I need is the information to put into this field to get the What’sApp icon … hope I could make myself clear. Any help?

• This topic was modified 2 years, 8 months ago by Jan Dembowski.

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