Great - I see you are already using the view to display that information.
Can you please send me admin access details so I can check what's going wrong there.
*** Please make a FULL BACKUP of your database and website.***
I would also eventually need to request temporary access (WP-Admin and FTP) to your site. Preferably to a test site where the problem has been replicated if possible in order to be of better help and check if some configurations might need to be changed.
I have set the next reply to private which means only you and I have access to it.
To display the grandchild post, you need to create nested views to query the related child posts. I've created the following views:
- lien caché
- lien caché
I see you are using the Divi theme builder and within your Divi theme builder template, I've just added the view where you can see the "Toolset Change":
=> lien caché
You can format the view's loop editor as per your requirement.