DropDown Menu does not work on mobile joomla

The drop-down menus on the website workgood:
www.test.articoliedirectory.it/pubblica-annuncio

but on mobile joomla do not work as seen from the attached image

@zecca3 , Hi, please send us a temporary admin login to our email support​@​mobilejoomla.com so that we can further investigate the issue.

Best,

John Mark C.
Mobile Joomla! Support

ok, email sent.