Can't get buttons to display on front page

I love the simplicity of use of this plugin and how it displays. I am having a problem, though. The sharing buttons do not show up on the front page. I tried entering the shortcode on the page and in a footer widget but no luck. I also tried adding this snippet to functions.php but no luck:
function my_display_condition() {
$condition1 = is_front_page();
$condition2 = (is_singular() && get_post_type() == ‘post’);
return $condition1 || $condition2;
}

add_filter(‘dvkss_display’, ‘my_display_condition’);

Any help would be greatly appreciated.

https://www.ads-software.com/plugins/dvk-social-sharing/