Very strange? I just made the reviews functionality active on my WordPress Woocommerce website, and I see the icons are broken with square boxes (some says “SSSSS”). There should be some CSS conflicts where the icon fonts were not properly loaded. So, I’ve came up overwriting some CSS styling including a new font-family to the page, and it’s working!
p.stars a:before, p.stars a:hover, p.stars a:visited, p.stars a:focus, p.stars a:hover~a:before, p.stars:hover a:before, p.stars.selected a:not(.active):before, p.stars.selected a.active:before, p.stars.selected a.active~a:before {
font-family: 'star';
content: '';
line-height: 1.4 !important;
}
