[Plugin: FireStorm Professional Real Estate Plugin] Set the listings site/page to private will crash

Is there a way to set the listings page/site to private or password protectet? because if i try this it crashes!

Thanks Anyway for the Great Plugin.

This Plugin and the wp-property plugin has this same issue, but from the flexibly i would prefer wp-property…

https://www.ads-software.com/extend/plugins/fs-real-estate-plugin/