Privacy checkbox in Elementor form

Hello everyone. I’m finishing my first page in Elementor and I find myself stuck by a simple checkbox. I have set up my contact form and for some reason I can’t find, the privacy checkbox is not showing as it should.

Only one line is visible (I attach a sample). Please, could someone tell me how to solve it? I use Elementor Pro and TwentyTwentyOne.

Thanks in advance.