Move the parent pages back to the root (no folders).
Example:
/services - Parent page with link in the menu
/services/services-page - Child page in the subfolder, subfolder has with same slug as parent page /services
Re-publish your site.
Move the parent pages back to the root (no folders).
Example:
/services - Parent page with link in the menu
/services/services-page - Child page in the subfolder, subfolder has with same slug as parent page /services
Re-publish your site.