Custom Post Type not registering in divi builder

I have a custom post type called “Company” created using custom post CPT UI plugin.
In the past i have been able to create company pages using the divi builder as it was showing up in the page editor. But now divi builder is not showing up.
Divi Builder does not activate, so I cannot use Divi to create and modify the content.
Divi Builder works perfectly for normal posts. It seems that divi is not registering the custom post type. When I go to theme options > builder, the custom post type no longer shows as an option, even though it’s available in my admin panel. previous company custom posts can still be edited using the divi builder they were created with.
How can i get divi to register the custom post type so that it shows as an option in the theme options>builder section?

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