Icons not showing with WP 5.3.1 update

Hello,
on several websites the (social media) icons have disappeared (not just in the header + footer) with WP 5.3.1 update.

With the below enfold social media fix I managed to get at least the social media icons in the header and footer back.
Icons on pages, however, are still not showing. Can you please advise what to do. Thank you!

.social_bookmarks_twitter a::before, .av-social-link-twitter a::before {
font-family: ‘entypo-fontello’;
content: ‘’;
}
.social_bookmarks_facebook a::before, .av-social-link-facebook a::before {
font-family: ‘entypo-fontello’;
content: ‘’;
}
.social_bookmarks_linkedin a::before, .av-social-link-linkedin a::before {
font-family: ‘entypo-fontello’;
content: ‘’;
}
.social_bookmarks_pinterest a::before, .av-social-link-pinterest a::before {
font-family: ‘entypo-fontello’;
content: ‘’;
}
.social_bookmarks_tumblr a::before, .av-social-link-tumblr a::before {
font-family: ‘entypo-fontello’;
content: ‘’;
}
.social_bookmarks_reddit a::before, .av-social-link-reddit a::before {
font-family: ‘entypo-fontello’;
content: ‘’;
}
.social_bookmarks_vk a::before, .av-social-link-vk a::before {
font-family: ‘entypo-fontello’;
content: ‘’;
}
.social_bookmarks_gplus a::before, .av-social-link-gplus a::before {
font-family: ‘entypo-fontello’;
content: ‘’;
}
.social_bookmarks_mail a::before {
font-family: ‘entypo-fontello’;
content: ‘’;
}
.social_bookmarks_dribble a::before {
font-family: ‘entypo-fontello’;
content: ‘’;
}
.social_bookmarks_youtube a::before {
font-family: ‘entypo-fontello’;
content: ‘’;
}
.social_bookmarks_instagram a::before {
font-family: ‘entypo-fontello’;
content: ‘’;
}
.social_bookmarks_vimeo a::before {
font-family: ‘entypo-fontello’;
content: ‘’;
}