Hi!
Yes, I have an idea why. If the site flags are different from public/non spam/non archive then they won’t show up by default. This restriction is going to be removed from the next version, but until then, here is a quick fix:
1. Open up the wp-content/plugins/ajax-search-pro/functions.php and go to line 245, where you should see this:
[php]
$blogs = $wpdb->get_results( $wpdb->prepare("SELECT blog_id, domain, path FROM $wpdb->blogs WHERE site_id = %d AND public = ‘1’ AND archived = ‘0’ AND mature = ‘0’ AND spam = ‘0’ AND deleted = ‘0’ ORDER BY registered DESC", $wpdb->siteid), ARRAY_A );
[/php]
2. Modify that line to:
[php]
$blogs = $wpdb->get_results( $wpdb->prepare("SELECT blog_id, domain, path FROM $wpdb->blogs WHERE site_id = %d ORDER BY registered DESC", $wpdb->siteid), ARRAY_A );
[/php]
It should most likely solve the issue.