Hi,
1. You'll be able to adjust your login box input width by using some CSS code like :
.hikashop_checkout_login_right_part input {
width: 20% !important;
height: 35px !important;
}
2. You'll probably find your solution through this
thread
:
You can edit the file administrator/components/com_hikashop/helper/cart.php and change the line:
echo '<div style="display:none;"><a rel="{handler: \'iframe\',size: {x: 480, y: 140}}" id="hikashop_notice_box_trigger_link" href="'.hikashop_completeLink('checkout&task=notice'.$url_itemid,true).'"></a></div>';
3. I used the "proceed to checkout" button of your cart module and I was correctly redirected to the checkout.