Hello,
"1) The fields overlap, resulting in a messy appearance."
You can add this kind of css commands in your frontend file css, see how
here
.
#checkout_ID_html_class .login_class_part,
#checkout_ID_html_class .registration_class_part {
width: 100%;
}
"
2) Trying to log in or register from the Hikashop checkout screen produces errors:"
In order to help us,
2 things you can do :
1. Process a test with a
default template like protoStar, and make us your returns, even if that change nothing
2. Active the
Joomla debug (maximum level) process a new test, and provide the screenshot with all new displayed data around your error.
Awaiting your elements for your second point.
Regards