Hello Sperlonga Escursioni

Thank you for your purchase.

Which builder are you using? Is this an Elementor popup? If so, there is some CSS and JS that needs to be added in order for it to work properly. Just in case you are using Elementor I'll provide the code here:

My advice would be to install the Add Admin JavaScript and Add Admin CSS plugins, and then apply the following:

CSS:

.el-select-dropdown, .el-popper {
z-index: 9999 !important}
.am-modal {
z-index: 9999 !important}

JS

if (!('ameliaBooking' in window)) {
window.ameliaBooking = {};
}
if (!('disableAutomaticLoading' in window['ameliaBooking'])) {
window.ameliaBooking.disableAutomaticLoading = true;
}
document.addEventListener('DOMContentLoaded', function(event) {
document.getElementById('ameliaPopUpButton').onclick = function() {
setTimeout(function () {
var ameliaPopUpForms = document.getElementsByClassName('amelia-elementor-popup');
for (var i = 0; i < ameliaPopUpForms.length; i++) {
window.ameliaBooking.load(ameliaPopUpForms[i], null, {});
}
}, 500);
};
var ameliaForms = document.getElementsByClassName('amelia-elementor-form');
for (var i = 0; i < ameliaForms.length; i++) {
window.ameliaBooking.load(ameliaForms[i], null, {});
}
});

You need to add an ID to the Edit button "ameliaPopUpButton":

Then, you need to enable "Prevent Closing on Overlay":

And then, when you're adding the shortcode in the pop-up, you need to add the class 'amelia-elementor-popup':

If you're adding a shortcode which is not in a pop-up, you need to add the class 'amelia-elementor-form'.

If it's some other popup, can you please create a page where this behavior is presented, and I'll inspect it to see if there's anything we can do?