How to prevent form submission in the background

Hello,

I have a client that wants the form to not submit in the background.
Is this even possible.

Below is the message that he sent me:

The form still seems to be submitting in the background. The redirect IS working but here’s what should be happening:

1) When the form submit button is hit it should immediately redirect to our system where WE handle the post action and can show a confirmation/error/etc.

Here’s what IS happening:

1) When the form submit button is pressed it submits the form to our system in the background and THEN redirects to our system without the POST information so we can’t show any errors or confirmation message to the customer because the front-facing side that they get redirected to doesn’t contain any of the form data.

Is there a way to get that form plugin to NOT submit in the background?

Unless I’m misunderstanding what is being said in that quote, it sounds like the client wants the form information to send to their url so that they can handle everything else but that the form is submitting in the background, and then it redirects with no form information and the client isn’t able to do anything on their end (i.e. the url that the user is redirected to)

Is it possible to prevent the form from submitting in the background? If yes, how would I do it?