Not working correctly with Contact Form 7 Version 4.8

I experienced the same thing. I cannot add or delete conditional rules anymore.

There’s a JS error saying: _wpcf7 is not defined
(edit only to get notified)

• This reply was modified 6 years, 10 months ago by Vitzkrieg.

The issue has also been reported to Contact Form 7: https://wordpress.org/support/topic/4-8-update-not-working-with-contact-form-7-conditional-fields/#post-9186531

I replaces _wpcf7 by wpcf7 but doesn´t work.

+1 – Rolled back to 4.7 pending notice that the plugin has been updated to work with CF 4.8

@bawse1010: For now, the solution is to apply the workaround mentioned above. Namely,

a temporary fix is to to search and replace _wpcf7 by wpcf7

in the scripts_admin.js

For anyone who can’t find it to download v4.7 go to https://wordpress.org/plugins/contact-form-7/advanced/ and scroll to bottom.