Can't edit or add new address

-- url of the page with the problem -- : padwebdesign.ro/cmdarad/index.php/taxe-cmd-arad/checkout
-- HikaShop version -- : 2.6.4
-- Joomla version -- : 3.6.5
-- Browser(s) name and version -- : All

I can't add or edit an existing address. When I click on add new or edit the existing is not pop ing up any windows or something that I can edit. I need to enter is some other account page to make the changes. Please see the rad marked zone of the site where is the issue.