I just find out how to fix this problem:
go to ads-managment.php (inc/ads-managment.php) and edit some codes in superads_lite_ad_managment function:
function superads_lite_ad_managment($content) {
global $post;
if (!is_single()) return $content;
$today = date_create(date(‘Y-m-d’));
$published = date_create(get_the_date(‘Y-m-d’, $post->ID));
$interval = date_diff($today, $published);
$age = $interval->format(‘%a’);
if ($before_content = get_theme_mod(‘superads_lite_ads_before_content’)) {
$content = ‘<div class=”ads-banner-block top-single-ads ‘. get_theme_mod(‘superads_lite_ads_before_content_align’) .'”>’ . html_entity_decode ($before_content, ENT_QUOTES) . ‘</div>’ . $content;
}
if ($middle_content = get_theme_mod(‘superads_lite_ads_middle_content’)) {
$content = superads_lite_ad_middle_content($content, ‘<div class=”ads-banner-block middle-single-ads ‘. get_theme_mod(‘superads_lite_ads_middle_content_align’) .'”>’ . html_entity_decode ($middle_content, ENT_QUOTES) . ‘</div>’);
}
if ($after_content = get_theme_mod(‘superads_lite_ads_after_content’)) {
$content = $content . ‘<div class=”ads-banner-block below-single-ads ‘. get_theme_mod(‘superads_lite_ads_after_content_align’) .'”>’ . html_entity_decode ($after_content, ENT_QUOTES) . ‘</div>’;
}
return $content;
}