Configurable list widget is not visible on embedded form

in this form ( https://eu.jotform.com/build/72892223144960 )

http://www.danzainfiera.it/moduli/KidzHipHopHurrah.php

there are field invisible:

Configurable List

People can't fill in the name of couple... help!

PLEASE...I dont'know how to do...in my opinion is a malfunction of this widget "configurable list"!

The Configurable list widgets are visible on your standalone form.

https://www.jotformpro.com/form/72892223144960 

Please re-embed your form with the iFrame code, to see if that will resolve the issue on your embedded form. Inside of this guide, you can find how to get the form iFrame code of your form:

Getting the Form iFrame Code