If you see this message in your listing pages. It means that the contact form is either missing or not setup properly.
[contact-form-7 404 "Not Found"]
- Go to wp-admin > Contact forms and check if you have any contact form created, if not you can create one.
- Copy the ID of the contact form (number)
- Edit listing type > single page > content and tabs > choose the tab where you are displaying the contact form, then click the contact form block. There, paste the contact form ID
The contact form should work after you follow these steps