Dear, I have check your site and I see the plugin is conflict with the Impreza theme. I have change date time picker in plugin to use Flatpickr and release it on Codecanyon. Please kindly update DHVC Form on your site to latest version 2.4.10 from Codecanyon and check again.
I have checked your form and found issues with the field names on your form. For example, the field *”Name / Όνομα ” is assigned the name “Name_Όνομα”, which prevents the form validation from working correctly.
Please ensure that field names follow the correct format:
✅ A single word using only letters (Unicode)
✅ No spaces
✅ No leading numbers
✅ Underscores (_) are allowed
Example: name, contact_phone_number…
Kindly review all field names in your form and make the necessary corrections.
Please kindly update DHWC Form to latest version 2.4.9 from Codecanyon to compatible with WordPress and WPBakery plugin latest version, then I think you should check with https://www.accessibilitychecker.org I check Demo Form Element Not have problem like extension on Chrome.
