Date Time Schedule doesn't appear

Hi,

The problem is the following:

in wcd data time admin plugin you can choose the date schedule and the time schedule. I introduce all the items, then I update options. The problem comes when I go to see how it works in the web page. The two fields appear (date and time); the date field let me choose correctly the day but the time field doesn’t open the dropdown to choose a time.

How can I resolve the issue??

Thank you very much for your support.

https://www.ads-software.com/plugins/woocommerce-customer-delivery-date-time-selection/