Amadeus Theme – Email link on Social Menu not working

Hi,

I’m using the Amadeus theme with a child theme, and I’m trying to add the Social Media menu using the Menu Social Icons plugin:

I can’t get the Email icon to show right ??

This is mi site: https://tiempodeluna-qigong.com/blog

And this is what I did:

I checked the forum and found that the theme does not have the Email icon, so I added the Email icon code to the child’s theme CSS:

.social-navigation li a[href*="mailto"]::before {
	content: '\f410';
}

And now we see the circle of the envelope link, but the icon is just showing a square, not the envelope icon.

What should I do? thanks!!!