if you uploaded fonts under Theme options > Fonts > Custom section, you need to also select this font under Theme options > Fonts > Family section. Only then, font will be active.
You can not use them in place of "mfn-icons" because this requires a lot of files customization. If you don't know how to do it, you supposed to contact with your website developer.
Comments
if you uploaded fonts under Theme options > Fonts > Custom section, you need to also select this font under Theme options > Fonts > Family section. Only then, font will be active.
Thanks!