Pardot registration form issue

Description
We have enabled the Zoom Webinar for Pardot app. We need to use Pardot forms to streamline marketing efforts and those are not behaving correctly as per the documentation provided here: https://zoomappdocs.docs.stoplight.io/pardot 7

The Pardot portions of the form behave as expected but an error is received after submission (screenshot below) and the registrant is not added to the Zoom list.

We have made the requested updates including:

  1. Created a Layout Template in Pardot specifically for Zoom Webinar, moving the form-if-thank-you block to the top
  2. Entered the code in Pardot Form Thank You Content using HTML editor including Post URL and Webinar ID
  3. Entered provided javascript in Pardot Form Thank You Code

Error
Post Registration time-out, Please try again latter
500 - v=2.0;clid=aw1;rid=INT_2a9abe19ccb94e27

Which App?
Zoom Webinar for Pardot

I was supporting the customer, this was the screenshot of the error message:
zoom

Hi,

What is the status here please?

/Jessica