Hi @tatemz
I am unable to debug this issue for you at the moment as it would require me to search through 3rd party code.
Lets break down the solution into steps.
1. Being able to alert something after the form has posted and the new HTML is appended to the DOM
2. console.log the new DOM html container after it is updated
3. Use the code I posted above to trigger the acf/setup_fields action on the new DOM element
