wordpress custom theme and wizziapp

I’m using this custom theme for wordpress:

https://themeforest.net/item/openhouse-real-estate-automotiv-car-dealership/104662?sso?WT.ac=search_item&WT.seg_1=search_item&WT.z_author=BuchmannDesign

And i’m using wizziapp:
https://www.wiziapp.com/

The problem is that wizziapp doesn’t take Property listings ( custom articles), just takes standard articles from WordPress.

The wizziapp team said to me that they don’t support wizziapp for custom themes.

Is there any way to make wizziapp get custom post types from wordpress like standard posts?