Auto refresh iframe table when data is added

I have embeded a form using an iframe.
I have embeded the table of results of the form, in another iframe.

I want to be able to automatically update the results table when a new form is submitted.
Alternatively, a refresh button would be OK.
I have added some js to the HTML embed of the iframes, but there is a problem with the id of the iframe.

Using Airtable, but I guess it could just as easily be Google docs (Forms and Sheets)

Here is my public share link:
(how to access public share link)