Currently (2025-04) this seems impossible / Elementor can’t provide a working solution! I’ve had to give up, hopefully this will get resolved for others… ‘elementor_pro/forms/render/item’ method In our tests will let you change some things and apparently can be used for checkboxes and select boxes, but providing a text input box value not working for […]

Elementor submits its form via ajax, so you can’t just do a $_POST grab on a page submit. You need to use its hooks. Form submit complete (with optional redirect)