I use a DHCV form on product pages so clients can make an inquiry bout that specific product. The content of these pages is displayed in a lightbox through a grid created with the Essential Grid plugin.

The form is set to display a message on successful submission. This works properly when I submit the form through the page itself. However, when I submit the form when the page content is loaded in the Essential Grid lightbox “I get a 404 page not found error” and the form data is not submitted. I tried changing the on successful submission options to redirect to a page or static url but this has the same effect.

How can I fix this?