That is correct. I just got it though. So I changed the link to a text field.
then added this to the child theme functions file:
add_shortcode( 'itinerary_link', 'shortcode_itinerary_link');
function shortcode_itinerary_link(){
$link_variable = get_field('the_itinerary_link');
$link = '<a href='.$link_variable.' class="button--gold3" target="_blank" rel="noopener noreferrer">Itinerary</a>';
return $link;
}
and added the shortcode in place of the button in the code module:
<div id="request_form">
<a href="#iframe-popup" class="button--gold3 open-iframe-popup">Register</a>
[iframe_popup]
[itinerary_link]
</div>
