Ugly Site Links showing post_type

Hello, can you please tell me wherein your settings I can prevent the sitelinks in search results from being in post_type format, such as, instead of the sitelinks showing the page titles, it is showing the post types, with the “_” and lowerdase letters. It was not like that before I installed this plugin. I do now post my site link here because it starts showing up in search results leading to embarassment.

Thanks for your help if you can offer any.