Hi @sibichan,
If your custom link in the menu looks like this.
Link to image: https://cld.wthms.co/55QRvu
Then make sure the following CSS is added in some fashion to your site.
.secondary-navigation a[href*="https://wa.me"] {
text-indent: -9999px;
}
.secondary-navigation a[href*="https://wa.me"]:after {
text-indent: 0;
display: block;
float: left;
}
a[href*="https://wa.me"]:after {
font-family: "Font Awesome 5 Brands";
font-weight: 400;
}
.secondary-navigation a[href*="wa.me/"]:after {
content: "\f232";
color: #cb2027;
}
Among my other social icons, it looks like this.
Link to image: https://cld.wthms.co/Hx3u9x
You can follow the same process for WeChat, but of course change the base URL and content used for the WeChat icon.