Try feeding the app an atom feed instead. (i.e. /feed/atom/ instead of /feed/.) The needed field(s) might be in there.
Else, there are a few hooks to add them via plugins (see the wp-includes/feed-*.php files).
Try feeding the app an atom feed instead. (i.e. /feed/atom/ instead of /feed/.) The needed field(s) might be in there.
Else, there are a few hooks to add them via plugins (see the wp-includes/feed-*.php files).