If you are using Contact Form 7 on Elementor Pro pop up builder, you may face an error where when you hit the Submit button, the whole page will refresh. It does not show a failure or success message
To fix it, It requires some tweaks to your WordPress theme code such that it works appropriately without refreshing the entire page.
One of the solutions (tested personally on my site) is to paste the below code on your functions.php file (located under /wp-content/themes/[your-theme]/).
The above code was contributed in Github by @drinkmaker, and you may find out more from the link: https://github.com/elementor/elementor/issues/7798
If the above does not work, you may also try the other solutions posted inside.