Social Icons in Footer

so try this – ( you have to insert the links instead of the asterisk # ) :

<ul class="noLightbox social_bookmarks icon_count_2">
	<li class="social_bookmarks_facebook av-social-link-facebook social_icon_1">
		<a href="#" aria-hidden="true" data-av_icon="" data-av_iconfont="entypo-fontello" title="Facebook" target="_blank" rel="nofollow noreferrer">
			<span class="avia_hidden_link_text">Facebook</span>
		</a>
	</li>
	<li class="social_bookmarks_instagram av-social-link-instagram social_icon_2">
		<a href="#" aria-hidden="true" data-av_icon="" data-av_iconfont="entypo-fontello" title="Instagram" target="_blank" rel="nofollow noreferrer">
			<span class="avia_hidden_link_text">Instagram</span>
		</a>
	</li>
</ul>

you can see here that it is working with the code – for more help please let me see your site to give better advice:
1) did you enter the code from: https://kriesi.at/support/topic/social-icons-in-footer-8/#post-1084502 with two links?
2) you can take a text-widget – but insert code to text (not visual) input field

https://webers-testseite.de/#footer
it is the right heading on top (blue background-color)

if like to center these icons on general – you first had to know the id of that widget ( on my test page it is #text-3)
code will be in that case:

#footer #text-3 .avia_textblock {
    display: inline-block;
    position: relative;
    left: 50%;
    transform: translateX(-50%);
}

to style and see all icons they must float left:
on default a ul listpoints are underneath

#footer .social_bookmarks li {
    height: 100%;
    float: left;
    padding: 0;
    border-right-style: solid;
    border-right-width: 1px;
    display: block;
    width: 30px;
}