Cannot enter details

Hi,

This comes from the CSS of your template:
select, textarea, input[type="text"], input[type="password"], input[type="url"], input[type="email"] {
box-sizing: border-box;
border-style: solid;
border-width: 1px;
color: #777;
font-family: Arial,sans-serif;
background: none repeat scroll 0% 0% #FFF;
border-color: #BCBCBC #DADADA #E5E5E5;
max-width: 100% !important;
padding: 10px 12px !important;
}

Remove it and it will work. I would recommend to contact your template provider for more help on that issue. They will be able to give you a better answer than us and potentially fix the template for other users using their template and HikaShop.