Hi,
Regarding the shipping address issue I would recommend to update your HikaShop. It could be a bug that we've fixed.
If that doesn't help, maybe you have an old override of your emails in System>Emails and there is a need to redo the modifications on the latest version of the preload of the email.
Regarding the icons, this comes from the CSS:
[class*='fa-']:before{
display: inline-block;
font-style: normal !important;
font-weight: normal;
line-height: 1;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale
}
in the file /templates/rt_spectral/css/rt_spectral-custom.css from your template.
Delete that CSS and it will work. I would recommend you to report the problem to your template provider as this change might create issues elsewhere for your template...