Duplicate Killer – Prevent Duplicate Form Submissions

1.7.7

Fixed duplicate protection for Formidable Forms payments.

Failed payments and invalid submissions no longer create Duplicate Killer records.

Improved Product, Quantity, and Total field labels in submission details.

1.7.6

Fixed duplicate protection for WPForms Stripe payments.

Failed payments no longer create Duplicate Killer records.

Fixed duplicate errors when returning from 3D Secure authentication.

1.7.5

Fixed duplicate submission handling for Contact Form 7 native Stripe payments.

Payment forms now save Duplicate Killer records only after payment is confirmed.

Prevented Stripe checkout from replacing duplicate protection messages.

1.7.4

New: Added SureForms support for duplicate submission protection.

New: Added early duplicate email checks for SureForms Stripe payments.

Fix: Improved support for longer form names.

1.7.3

You’re in control! Choose the exact form you want to protect with Duplicate Killer.

Switch forms easily from the plugin settings.

1.7.2

Added MetForm support for duplicate submission protection.

Added Modern Popup Mode for MetForm.

Display uploaded file links in submission details.

Added MetForm diagnostics and deactivation feedback.

1.7.1

Added hours and minutes to duplicate submission block duration.

Added hours and minutes to IP block duration.

Fixed IP block expiry when the site uses a local time zone.

Highlighted active duration values in the settings.

1.7.0

New: Modern Popup Mode displays duplicate submission mess