Using this plugin to automatically post vehicle listings

I’m using a theme with my wordpress site. It is for an RV dealership and it allows me to add an inventory of RVs onto their site. I want every listing made to be automatically published to their Facebook page, but this plugin doesn’t allow these listings to be added.

The theme is

https://themeforest.net/item/opendoor-responsive-real-estate-and-car-dealership/3417587?sso?WT.ac=search_item&WT.seg_1=search_item&WT.z_author=BuchmannDesign

My site is https://www.classicrvsales.com

Is it possible for me to add something into the code to allow this extra automatic posting? Or is there an easier way?

Any advice gratefully appreciated.

Thanks

https://www.ads-software.com/plugins/facebook-page-publish-2/